List of United States Senate elections (1914–present)

The United States Senate is the upper chamber of the United States Congress. Senators have been directly elected by state-wide popular vote since the Seventeenth Amendment to the United States Constitution in 1913. A senate term is six years with no term limit. Every two years a third of the seats are up for election. Some years also have a few special elections to fill vacancies. Each state has two senators elected in different years. There were 96 senators from 1912 to 1960 and 100 since then. The Senate has been dominated by Democrats (D) and Republicans (R) in the whole period.

Key
C# Conservative
D# Democratic
FL# Farmer–Labor
I# Independent
ID# Independent Democratic
P# Progressive
R# Republican
V# Vacant

Seats on election are shown in bold.
Re-elected: The sitting senator is elected for another term.
Hold: A new candidate from the same party is elected.
Gain: The party did not have the seat before.

Consider for example the Democrats (D) in 1914:

  • 36 sitting Democrats (D1 to D36) were not on election.
  • 14 sitting Democrats (D37 to D50) were re-elected (D50 had been appointed to fill a vacancy and is shown as an elected hold).
  • 3 new Democrats (D51 to D53) held seats by replacing other Democrats.
  • 3 new Democrats (D54 to D56) gained seats the Democrats did not have before.

1914

edit
D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38

Re-elected

D37

Re-elected

D36 D35 D34 D33 D32 D31 D30 D29
D39

Re-elected

D40

Re-elected

D41

Re-elected

D42

Re-elected

D43

Re-elected

D44

Re-elected

D45

Re-elected

D46

Re-elected

D47

Re-elected

D48

Re-elected

Majority → D49

Re-elected

R39

Hold

P1 D56

Gain

D55

Gain

D54

Gain

D53

Hold

D52

Hold

D51

Hold

D50

Elected[a]


Hold
R38

Hold

R37

Hold

R36

Re-elected

R35

Re-elected

R34

Re-elected

R33

Re-elected

R32

Re-elected

R31

Re-elected

R30

Re-elected

R29

Re-elected

R19 R20 R21 R22 R23 R24 R25 R26 R27

Re-elected

R28

Re-elected

R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
R1 R2 R3 R4 R5 R6 R7 R8

1916

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38

Re-elected

D37 D36 D35 D34 D33 D32 D31 D30 D29
D39

Re-elected

D40

Re-elected

D41

Re-elected

D42

Re-elected

D43

Re-elected

D44

Re-elected

D45

Re-elected

D46

Re-elected

D47

Hold

D48

Hold

Majority → D49

Hold

R39

Gain

R40

Gain

R41

Gain

R42

Gain

D54

Gain

D53

Gain

D52

Gain

D51

Gain

D50

Gain

R38

Gain

R37

Gain

R36

Gain

R35

Hold

R34

Hold

R33

Hold

R32

Hold

R31

Re-elected

R30

Re-elected

R29

Re-elected

R19 R20 R21 R22 R23 R24 R25

Re-elected

R26

Re-elected

R27

Re-elected

R28

Re-elected

R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
R1 R2 R3 R4 R5 R6 R7 R8

1918

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38

Re-elected

D37

Re-elected

D36

Re-elected

D35

Re-elected

D34

Re-elected

D33

Re-elected

D32

Re-elected

D31

Re-elected

D30 D29
D39

Re-elected

D40

Elected[a]

D41

Elected[a]

D42

Hold

D43

Hold

D44

Hold

D45

Hold

D46

Hold

D47

Gain

R49

Gain

Majority →
R39

Hold

R40

Hold

R41

Hold

R42

Hold

R43

Gain

R44

Gain

R45

Gain

R46

Gain

R47

Gain

R48

Gain

R38

Hold

R37

Re-elected

R36

Re-elected

R35

Re-elected

R34

Re-elected

R33

Re-elected

R32

Re-elected

R31

Re-elected

R30

Re-elected

R29

Re-elected

R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
R1 R2 R3 R4 R5 R6 R7 R8

1920

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
R59

Gain

D37

Hold

D36

Hold

D35

Hold

D34

Hold

D33

Elected[a]

D32

Re-elected

D31

Re-elected

D30

Re-elected

D29

Re-elected

R58

Gain

R57

Gain

R56

Gain

R55

Gain

R54

Gain

R53

Gain

R52

Gain

R51

Gain

R50

Gain

R49

Gain

Majority →
R39

Re-elected

R40

Re-elected

R41

Re-elected

R42

Re-elected

R43

Re-elected

R44

Re-elected

R45

Re-elected

R46

Hold

R47

Hold

R48

Hold

R38

Re-elected

R37

Re-elected

R36

Re-elected

R35

Re-elected

R34 R33 R32 R31 R30 R29
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
R1 R2 R3 R4 R5 R6 R7 R8

1922

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21

Re-elected

D22

Gain[b]


Re-elected
D23

Re-elected

D24

Hold

D25Gain D26Gain D27

Gain

D28

Hold

D38

Re-elected

D37

Hold

D36

Re-elected

D35

Re-elected

D34

Re-elected

D33

Re-elected

D32

Gain

D31

Hold

D30

Hold

D29

Re-elected

D39

Re-elected

D40

Gain

D41

Gain

D42

Re-elected

FL1

Gain

R53

Gain

R52

Gain

R51

Hold

R50

Hold

R49

Hold

Majority →
R39 R40 R41 R42

Re-elected

R43

Re-elected

R44

Re-elected

R45

Re-elected

R46

Re-elected

R47

Elected[a]


Re-elected
R48

Elected[a]

R38 R37 R36 R35 R34 R33 R32 R31 R30 R29
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
R1 R2 R3 R4 R5 R6 R7 R8

1924

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38

Hold

D37

Re-elected

D36

Re-elected

D35

Re-elected

D34

Re-elected

D33

Re-elected

D32

Re-elected

D31

Re-elected

D30

Re-elected

D29

Re-elected

D39

Hold

D40

Gain

FL1 R55

Gain

R54

Gain

R53

Gain

R52

Gain

R51

Gain

R50

Hold

R49

Hold

Majority →
R39

Re-elected

R40

Re-elected

R41

Re-elected

R42

Re-elected

R43

Re-elected

R44

Elected[a]


Re-elected
R45

Elected


Re-elected
R46

Hold

R47

Hold

R48

Hold

R38

Re-elected

R37

Re-elected

R36

Re-elected

R35

Re-elected

R34

Re-elected

R33 R32 R31 R30 R29
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
R1 R2 R3 R4 R5 R6 R7 R8

1926

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32 D31 D30 D29
D39
Hold
D40
Gain
D41
Gain
D42
Gain
D43
Gain
D44
Gain
D45
Gain
FL1 R50
Ran
R49
Hold
Majority →
R39
Re-elected
R40
Re-elected
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Re-elected
R45
Hold
R46
Hold
R47
Hold
R48
Hold
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31 R30 R29
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1928

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32
Re-elected
D31
Re-elected
D30
Re-elected
D29
Re-elected
D39
Re-elected
D40
Hold
FL1
Re-elected
V1 V2 R53
Gain
R52
Gain
R51
Gain
R50
Gain
R49
Gain
Majority → R48
Gain
R39
Re-elected
R40
Re-elected
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Re-elected
R45
Elected
R46
Elected
R47
Hold
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35 R34 R33 R32 R31 R30 R29
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1930

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27
Re-elected
D28
Re-elected
D38
Hold
D37
Hold
D36
Hold
D35
Hold
D34
Hold
D33
Re-elected
D32
Re-elected
D31
Re-elected
D30
Re-elected
D29
Re-elected
D39
Gain
D40
Gain
D41
Gain
D42
Gain
D43
Gain
D44
Gain
D45
Gain
FL1 R50
Gain
R49
Hold
Majority →
R39
Re-elected
R40
Re-elected
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Re-elected
R45
Re-elected
R46
Re-elected
R47
Hold
R48
Hold
R38
Re-elected
R37 R36 R35 R34 R33 R32 R31 R30 R29
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1932

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32
Re-elected
D31 D30 D29
D39
Re-elected
D40
Re-elected
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Hold
D46
Hold
D47
Hold
D48
Gain
Majority → D49
Gain
D58
Gain
D57
Gain
D56
Gain
D55
Gain
D54
Gain
D53
Gain
D52
Gain
D51
Gain
D50
Gain
D59
Gain
FL1 R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31 R30 R29
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1934

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38 D37 D36 D35 D34 D33 D32 D31 D30 D29
D39 D40 D41 D42 D43 D44 D45 D45 D47
Re-elected
D48
Re-elected
Majority → D49
Re-elected
D58
Hold
D57
Re-elected
D56
Re-elected
D55
Re-elected
D54
Re-elected
D53
Re-elected
D52
Re-elected
D51
Re-elected
D50
Re-elected
D59
Hold
D60
Hold
D61
Gain
D62
Gain
D63
Gain
D64
Gain
D65
Gain
D66
Gain
D67
Gain
D68
Gain
R19
Re-elected
R20
Re-elected
R21
Re-elected
R22
Re-elected
R23
Re-elected
R24
Re-elected
R25
Re-elected
P1
Re-elected
new party
FL1
Re-elected
D69
Gain
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1936

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38 D37 D36 D35 D34 D33 D32 D31 D30 D29
D39 D40 D41 D42 D43 D44 D45 D45 D46 D47
Majority → D49
D58
Re-elected
D57
Re-elected
D56
Re-elected
D55
Re-elected
D54
Re-elected
D53
Re-elected
D52
Re-elected
D51
Re-elected
D50
D59
Re-elected
D60
Re-elected
D61
Re-elected
D62
Re-elected
D63
Re-elected
D64
Re-elected
D65
Re-elected
D66
Hold
D67
Hold
D68
Hold
FL1 FL2
Hold
P1 V1 D74
Gain
D73
Gain
D72
Gain
D71
Gain
D70
Gain
D69
Gain
I1
Re-elected
new party
R17
Gain
R16
Hold
R15
Re-elected
R14
Re-elected
R13
Re-elected
R12
Re-elected
R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1938

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38 D37 D36 D35 D34 D33 D32 D31 D30 D29
D39 D40 D41 D42 D43 D44 D45 D46 D47 D48
Majority → D49
Re-elected
D58
Re-elected
D57
Hold
D56
Re-elected
D55
Re-elected
D54
Re-elected
D53
Re-elected
D52
Hold
D51
Re-elected
D50
Re-elected
D59
Re-elected
D60
Re-elected
D61
Re-elected
D62
Re-elected
D63
Re-elected
D64
Re-elected
D65
Re-elected
D66
Re-elected
D67
Re-elected
D68
Hold
R19
Gain
R20
Gain
R21
Gain
R22
Gain
P1 FL1 FL2 I1 D70
Re-elected
D69
Re-elected
R18
Gain
R17
Gain
R16
Gain
R15
Re-elected
R14
Re-elected
R13
Re-elected
R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1940

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38 D37 D36 D35 D34 D33 D32 D31 D30 D29
D39 D40 D41 D42 D43 D44 D45 D46 D47
Re-elected
D48
Re-elected
Majority → D49
Re-elected
D58
Re-elected
D57
Re-elected
D56
Re-elected
D55
Re-elected
D54
Re-elected
D53
Re-elected
D52
Re-elected
D51
Re-elected
D50
Re-elected
D59
Re-elected
D60
Re-elected
D61
Re-elected
D62
Re-elected
D63
Hold
D64
Hold
D65
Hold
D66
Hold
D67
Gain
I1
R19
Re-elected
R20
Re-elected
R21
Re-elected
R22
Hold
R23
Hold
R24
Gain
R25
Gain
R26
Gain
R27
Gain
P1
Re-elected
R18
Re-elected
R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1942

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38 D37 D36 D35 D34 D33 D32 D31 D30 D29
D39 D40 D41 D42 D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
Majority → D49
Re-elected
P1 D57
Hold
D56
Hold
D55
Re-elected
D54
Re-elected
D53
Re-elected
D52
Re-elected
D51
Re-elected
D50
Re-elected
R38
Gain
R37
Gain
R36
Gain
R35
Gain
R34
Gain
R33
Gain
R32
Gain
R31
Gain
R30
Gain
R29
Re-elected
R19 R20 R21
Re-elected
R22
Re-elected
R23
Re-elected
R24
Re-elected
R25
Re-elected
R26
Re-elected
R27
Re-elected
R28
Re-elected
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1944

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38
Re-elected
D37 D36 D35 D34 D33 D32 D31 D30 D29
D39
Re-elected
D40
Re-elected
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
Majority → D49
Re-elected
D58
Gain
D57
Gain
D56
Gain
D55
Hold
D54
Hold
D53
Hold
D52
Hold
D51
Hold
D50
Re-elected
P1 R37
Gain
R36
Gain
R35
Gain
R34
Hold
R33
Re-elected
R32
Re-elected
R31
Re-elected
R30
Re-elected
R29
Re-elected
R19 R20 R21 R22 R23 R24 R25 R26 R27
Re-elected
R28
Re-elected
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1946

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35 D34 D33 D32 D31 D30 D29
D39
Re-elected
D40
Re-elected
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Hold
D45
Hold
D46
Hold
R50
Gain
R49
Gain
Majority → R48
Gain
R39
Hold
R40
Gain
R41
Gain
R42
Gain
R43
Gain
R44
Gain
R45
Gain
R46
Gain
R47
Gain
R38
Hold
R37
Hold
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R30
Re-elected
R29
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1948

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32
Re-elected
D31 D30 D29
D39
Re-elected
D40
Re-elected
D41
Re-elected
D42
Hold
D43
Hold
D44
Hold
D45
Hold
D46
Gain
D47
Gain
D48
Gain
Majority → D49
Gain
R39
Hold
R40
Hold
R41
Hold
R42
Hold
D54
Gain
D53
Gain
D52
Gain
D51
Gain
D50
Gain
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33 R32 R31 R30 R29
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1950

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34 D33 D32 D31 D30 D29
D39
Re-elected
D40
Re-elected
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Hold
D47
Hold
D48
Hold
Majority → D49
Gain
R39
Re-elected
R40
Re-elected
R41
Hold
R42
Hold
R43
Gain
R44
Gain
R45
Gain
R46
Gain
R47
Gain
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R30 R29
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1952

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38
Re-elected
D38
Re-elected
D36 D35 D34 D33 D32 D31 D30 D29
D39
Re-elected
D40
Re-elected
D41
Re-elected
D42
Re-elected
D43
Hold
D44
Hold
D45
Gain
D46
Gain
D47
Gain
D48
Gain
Majority using VP's vote ↓
R39
Re-elected
R40
Re-elected
R41
Re-elected
R42
Re-elected
R43
Hold
R44
Gain
R45
Gain
R46
Gain
R47
Gain
R48
Gain
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R30
Re-elected
R29
Re-elected
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1954

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27
Re-elected
D28
Re-elected
D38
Re-elected
D37
Hold
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32
Re-elected
D31
Re-elected
D30
Re-elected
D29
Re-elected
D39
Re-elected
D40
Re-elected
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Hold
D45
Gain
D46
Gain
D47
Gain
D48
Gain
Plurality ↑
R39
Re-elected
R40
Re-elected
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Hold
R45
Hold
R46
Gain
R47
Gain
I1
R38
Re-elected
R37 R36 R35 R34 R33 R32 R31 R30 R29
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1956

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34 D33 D32 D31 D30 D29
D39
Re-elected
D40
Re-elected
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Hold
D48
Gain
Majority → D49
Gain
R39
Re-elected
R40
Re-elected
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Gain
R45
Gain
D51
Gain
D50
Gain
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R30 R29
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1958

edit
  D1 D2 D3 D4 D5 D6 D7 D8
D18 D17 D16 D15 D14 D13 D12 D11 D10 D9
D19 D20 D21 D22 D23 D24 D25 D26 D27 D28
D38
Re-elected
D37 D36 D35 D34 D33 D32 D31 D30 D29
D39
Re-elected
D40
Re-elected
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
Majority → D49
Re-elected
D58
Gain
D57
Gain
D56
Gain
D55
Gain
D54
Gain
D53
Gain
D52
Gain
D51
Gain
D50
Gain
D59
Gain
D60
Gain
D61
Gain
R35
Hold
R34
Hold
R33
Hold
R32
Re-elected
R31
Re-elected
R30
Re-elected
R29
Re-elected
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
Re-elected
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
  R1 R2 R3 R4 R5 R6 R7 R8

1960

edit
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40 D39 D38 D37 D36 D35 D34 D33 D32 D31
D41 D42 D43 D44 D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
D49
Re-elected
D50
Re-elected
Majority → D51
Re-elected
D60
Re-elected
D59
Re-elected
D58
Re-elected
D57
Re-elected
D56
Re-elected
D55
Re-elected
D54
Re-elected
D53
Re-elected
D52
Re-elected
D61
Re-elected
D62
Re-elected
D63
Hold
D64
Hold
R36
Gain
R35
Gain
R34
Hold
R33
Re-elected
R32
Re-elected
R31
Re-elected
R21 R22 R23 R24
Re-elected
R25
Re-elected
R26
Re-elected
R27
Re-elected
R28
Re-elected
R29
Re-elected
R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1962

edit
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40 D39 D38 D37 D36 D35 D34 D33 D32 D31
D41 D42 D43 D44 D45 D46
Re-elected
D47
Re-elected
D48
Re-elected
D49
Re-elected
D50
Re-elected
Majority → D51
Re-elected
D60
Re-elected
D59
Re-elected
D58
Re-elected
D57
Re-elected
D56
Re-elected
D55
Re-elected
D54
Re-elected
D53
Re-elected
D52
Re-elected
D61
Re-elected
D62
Re-elected
D63
Hold
D64
Gain
D65
Gain
D66
Gain
D67
Gain
D68
Gain
R32
Gain
R31
Re-elected
R21 R22
Re-elected
R23
Re-elected
R24
Re-elected
R25
Re-elected
R26
Re-elected
R27
Re-elected
R28
Re-elected
R29
Re-elected
R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1964

edit
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40 D39 D38 D37 D36 D35 D34 D33 D32 D31
D41 D42 D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
D49
Re-elected
D50
Re-elected
Majority → D51
Re-elected
D60
Re-elected
D59
Re-elected
D58
Re-elected
D57
Re-elected
D56
Re-elected
D55
Re-elected
D54
Re-elected
D53
Re-elected
D52
Re-elected
D61
Re-elected
D62
Re-elected
D63
Re-elected
D64
Re-elected
D65
Re-elected
D66
Gain
D67
Gain
D68
Gain
R32
Gain
R31
Hold
R21 R22 R23 R24 R25 R26
Re-elected
R27
Re-elected
R28
Re-elected
R29
Re-elected
R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1966

edit
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40 D39 D38 D37 D36 D35 D34 D33 D32 D31
D41 D42 D43 D44 D45 D46 D47 D48 D49 D50
Re-elected
Majority → D51
Re-elected
D60
Re-elected
D59
Re-elected
D58
Re-elected
D57
Re-elected
D56
Re-elected
D55
Re-elected
D54
Re-elected
D53
Re-elected
D52
Re-elected
D61
Re-elected
D62
Re-elected
D63
Re-elected
D64
Hold
R36
Gain
R35
Gain
R34
Gain
R33
Hold
R32
Hold
R31
Re-elected
R21
Re-elected
R22
Re-elected
R23
Re-elected
R24
Re-elected
R25
Re-elected
R26
Re-elected
R27
Re-elected
R28
Re-elected
R29
Re-elected
R30
Re-elected
R20
Re-elected
R19
Re-elected
R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1968

edit
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40 D39 D38 D37 D36 D35 D34 D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
D49
Re-elected
D50
Re-elected
Majority → D51
Re-elected
R41
Gain
R42
Gain
D58
Gain
D57
Gain
D56
Hold
D55
Hold
D54
Hold
D53
Re-elected
D52
Re-elected
R40
Gain
R39
Gain
R38
Gain
R37
Gain
R36
Gain
R35
Hold
R34
Hold
R33
Re-elected
R32
Re-elected
R31
Re-elected
R21 R22 R23 R24 R25 R26 R27
Re-elected
R28
Re-elected
R29
Re-elected
R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1970

edit
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
D49
Re-elected
D50
Hold
Majority → D51
Hold
R41
Hold
R42
Gain
R43
Gain
R44
Gain
R45
Gain
C1
Gain
I1
Re-elected
new party
D53
Gain
D52
Hold
R40
Re-elected
R39
Re-elected
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35 R34 R33 R32 R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1972

edit
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40 D39 D38 D37 D36 D35 D34 D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
D49
Hold
D50
Hold
Majority → D51
Gain
R41
Gain
R42
Gain
C1 I1 D56
Gain
D55
Gain
D54
Gain
D53
Gain
D52
Gain
R40
Gain
R39
Gain
R38
Hold
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R21 R22 R23 R24 R25 R26
Re-elected
R27
Re-elected
R28
Re-elected
R29
Re-elected
R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1974

edit
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37 D36 D35 D34 D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
D49
Re-elected
D50
Re-elected
Majority → D51
Re-elected
D60
Gain
D59
Gain
D58
Gain
D57
Hold
D56
Hold
D55
Hold
D54
Hold
D53
Re-elected
D52
Re-elected
I1 C1 R38
Gain
R37
Hold
R36
Hold
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R21 R22 R23 R24 R25 R26 R27 R28
Re-elected
R29
Re-elected
R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1976

edit
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40 D39 D38 D37 D36 D35 D34 D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
D49
Re-elected
D50
Re-elected
Majority → D51
Re-elected
D60
Gain
D59
Gain
D58
Gain
D57
Gain
D56
Gain
D55
Gain
D54
Hold
D53
Hold
D52
Re-elected
D61
Gain
I1
Re-elected
R38
Gain
R37
Gain
R36
Gain
R35
Gain
R34
Gain
R33
Gain
R32
Gain
R31
Hold
R21 R22 R23 R24 R25 R26 R27 R28
Re-elected
R29
Re-elected
R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1978

edit
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40 D39 D38 D37 D36 D35 D34 D33 D32 D31
D41 D42 D43 D44 D45 D46
Ran
D47
Ran
D48
Ran
D49
Ran
D50
Ran
Majority → D51
Ran
I1 D59
Gain
D58
Gain
D57
Gain
D56
Gain
D55
Gain
D54
Hold
D53
Hold
D52
Hold
R40
Gain
R39
Gain
R38
Gain
R37
Gain
R36
Gain
R35
Gain
R34
Gain
R33
Hold
R32
Hold
R31
Hold
R21 R22
Ran
R23
Ran
R24
Ran
R25
Ran
R26
Ran
R27
Ran
R28
Ran
R29
Ran
R30
Ran
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1980

edit

The November 4, 1980 elections coincided with Ronald Reagan's victory in the presidential election. Reagan's large margin of victory over incumbent Jimmy Carter pulled in many Democratic voters and gave a huge boost to Republican Senate candidates.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34 D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Hold
D46
Hold
I1 R53
Gain
R52
Gain
R51
Gain
Majority →
R41
Hold
R42
Gain
R43
Gain
R44
Gain
R45
Gain
R46
Gain
R47
Gain
R48
Gain
R49
Gain
R50
Gain
R40
Hold
R39
Hold
R38
Hold
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1982

edit
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27
Re-elected
D28
Re-elected
D29
Re-elected
D30
Re-elected
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32
Re-elected
D31
Re-elected
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Gain
D46
Gain
R54
Gain
R53
Gain
R52
Hold
R51
Re-elected
Majority →
R41 R42
Re-elected
R43
Re-elected
R44
Re-elected
R45
Re-elected
R46
Re-elected
R47
Re-elected
R48
Re-elected
R49
Re-elected
R50
Re-elected
R40 R39 R38 R37 R36 R35 R34 R33 R32 R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1984

edit
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32
Re-elected
D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Hold
D45
Hold
D46
Gain
D47
Gain
R53
Gain
R52
Hold
R51
Re-elected
Majority →
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Re-elected
R45
Re-elected
R46
Re-elected
R47
Re-elected
R48
Re-elected
R49
Re-elected
R50
Re-elected
R40
Re-elected
R39
Re-elected
R38
Re-elected
R37
Re-elected
R36 R35 R34 R33 R32 R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1986

edit
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35 D34 D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Hold
D46
Hold
D47
Gain
D48
Gain
D49
Gain
D50
Gain
Majority → D51
Gain
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Hold
R45
Gain
D55
Gain
D54
Gain
D53
Gain
D52
Gain
R40
Re-elected
R39
Re-elected
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1988

edit
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36 D35 D34 D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
D49
Re-elected
D50
Re-elected
Majority → D51
Re-elected
R41
Re-elected
R42
Re-elected
R43
Gain
R44
Gain
R45
Gain
D55
Gain
D54
Gain
D53
Gain
D52
Gain
R40
Re-elected
R39
Re-elected
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1990

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The elections were held November 6, 1990. Democrats increased their majority with a net gain of one seat from Republicans. The election took place in the middle of President George H. W. Bush's term, and, as with most other midterm elections, the party not holding the presidency gained seats in Congress. Only one seat changed parties in this election. Democrats would later gain a 57th seat after a Democrat was appointed to replace a Republican who had died.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39 D38 D37 D36 D35 D34 D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
D49
Re-elected
D50
Re-elected
Majority → D51
Re-elected
R41
Re-elected
R42
Hold
R43
Hold
R44
Hold
D56
Gain
D55
Re-elected
D54
Re-elected
D53
Re-elected
D52
Re-elected
R40
Re-elected
R39
Re-elected
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R21 R22 R23 R24 R25 R26 R27 R28 R29
Re-elected
R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1992

edit

The elections were held November 3, 1992 and coincided with Bill Clinton's victory the presidential election. Despite the presidential victory, Democrats had a net loss of a seat in the general elections, and only managed to break even by winning a seat in a special election.

Democratic victories over Republicans John F. Seymour (of California) and Bob Kasten (of Wisconsin) were cancelled out by the defeats of Democrats Wyche Fowler (of Georgia) and Terry Sanford (of North Carolina). The election of four new Democratic women to the Senate was notable (referred to in the press as the "Year of the Woman"). Due to a special election in California, both of California's Senate seats were up for election in 1992. These seats were won by Dianne Feinstein and Barbara Boxer. As a consequence, California became the first state to have elected women to occupy both of its Senate seats.

Democrat Carol Moseley Braun (of Illinois), became the first African-American woman in the United States Senate.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37 D36 D35 D34 D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
D49
Hold
D50
Hold
Majority → D51
Hold
R41
Hold
R42
Hold
R43
Gain
D57
Gain
D56
Gain
D55
Retired
D54
Retired
D53
Hold
D52
Hold
R40
Hold
R39
Re-elected
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1994

edit

The elections were held November 8, 1994. Republicans were able to take control of the Senate from the Democrats. In a midterm election, the opposition Republicans held the traditional advantage. Congressional Republicans campaigned against the early presidency of Bill Clinton, including his unsuccessful health care plan.[citation needed]

The Republican Party successfully defended all of its seats and captured eight seats from the Democrats, including the seats of sitting Senators in Pennsylvania and Tennessee, as well as six open seats in Arizona, Maine, Michigan, Ohio, Oklahoma, and Tennessee. Notably, Tennessee's Senate delegation switched from entirely Democratic to entirely Republican in a single election. This election marked the first time Republicans controlled the Senate since January 1987, and coincided with the first change of control in the House of Representatives since January 1955 and a Republican net gain of ten governorships. Collectively, these Republican gains are known as the "Republican Revolution." This was also the first time since 1980 that Republicans made net gains in the Senate, but the last time the Republicans also made gains among class 1 senators.

Initially, the balance was 52–48 in favor of the Republicans, but after the power change, two Democrats switched parties, bringing the balance to 54–46.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Ran
D39
Ran
D38
Ran
D37
Ran
D36 D35 D34 D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
R52
Re-elected
R51
Re-elected
Majority →
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Hold
R45
Gain
R46
Gain
R47
Gain
R48
Gain
R49
Gain
R50
Gain
R40
Re-elected
R39
Re-elected
R38
Re-elected
R37
Hold
R36
Re-elected
R35
Hold
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1996

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The election was held November 5, 1996 and coincided with Democrat Bill Clinton's presidential re-election. Despite Clinton's re-election and his party picking up a net two seats in the House elections held the same day, the Republicans had a net gain of two seats in the Senate, following major Republican gains two years previously in the 1994 elections. As such, Clinton became the first president re-elected since Theodore Roosevelt in 1904 to win either of his terms without any Senate coattails. The Republicans captured open seats in Alabama, Arkansas, and Nebraska. In South Dakota, Democrat Tim Johnson narrowly defeated incumbent Republican Larry Pressler. The 1996 election marked the first time since 1980 that the Republican party made gains in the Senate for two consecutive election cycles.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Hold
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32 D31
D41
Hold
D42
Hold
D43
Hold
D44
Hold
D45
Gain
R55
Gain
R54
Gain
R53
Hold
R52
Hold
R51
Hold
Majority →
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Re-elected
R45
Re-elected
R46
Re-elected
R47
Re-elected
R48
Re-elected
R49
Re-elected
R50
Hold
R40
Re-elected
R39
Re-elected
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35 R34 R33 R32 R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

1998

edit

The November 3, 1998 elections were a roughly even contest between Republicans and Democrats. While the Democrats had to defend more seats up for election, Republican attacks on the morality of President Bill Clinton failed to connect with voters and anticipated Republican gains did not materialize. The Republicans picked up open seats in Ohio and Kentucky and narrowly defeated an incumbent senator in Illinois, but these were offset by the Democrats' gain of an open seat in Indiana and defeats of senators in New York and North Carolina. The balance of the Senate remained unchanged at 55–45 in favor of the Republicans. With Democrats gaining five seats in the House of Representatives, this marked the first time since 1934 that the out-of-Presidency party failed to gain congressional seats in a mid-term election, and the first time since 1822 that the party not in control of the White House failed to gain seats in the mid-term election of a President's second term. These are the last senate elections that resulted in no net change in the balance of power.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27
Re-elected
D28
Re-elected
D29
Re-elected
D30
Re-elected
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32
Re-elected
D31
Re-elected
D41
Re-elected
D42
Re-elected
D43
Gain
D44
Gain
D45
Gain
R55
Gain
R54
Gain
R53
Gain
R52
Re-elected
R51
Re-elected
Majority →
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Re-elected
R45
Re-elected
R46
Re-elected
R47
Re-elected
R48
Re-elected
R49
Re-elected
R50
Re-elected
R40 R39 R38 R37 R36 R35 R34 R33 R32 R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

2000

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The November 7, 2000 elections coincided with the presidential election of Republican George W. Bush. It featured a number of fiercely contested elections that resulted in a victory for the Democrats, who gained a net total of four seats from Republicans. This election marked the first election year since 1988 where Democrats made net gains in the Senate.

These elections took place six years after Republicans had won a net gain of eight seats in Senate Class 1 during the elections of 1994. Democrats defeated Republican senators in Delaware, Michigan, Minnesota, Missouri, and Washington, as well as winning an open seat in Florida. In Missouri, the winner was elected posthumously. The Republicans did defeat one incumbent in Virginia and won an open seat in Nevada.

These elections resulted in an equal 50–50 split between Republicans and Democrats, meaning the Vice President would cast the tie-breaking votes in organizing the Senate. This resulted in the Democrats winning control of the Senate for only 17 days, since Al Gore was still Vice President and President of the Senate at the beginning of the new term, on January 3, 2001. But the Republicans regained control of the chamber when the new Vice President Dick Cheney was inaugurated January 20. The Republican majority would last until June 6, 2001 when a Republican Senator became an Independent and caucused with the Democrats.

These are the last elections with only Republicans and Democrats in the Senate. Starting with that Independent's party switch, there would always be at least one third-party senator.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32 D31
D41
Re-elected
D42
Hold
D43
Hold
D44
Hold
D45
Gain
D46
Gain
D47
Gain
D48
Gain
D49
Gain
D50
Gain
Majority with Democratic Vice President→
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Re-elected
R45
Re-elected
R46
Re-elected
R47
Re-elected
R48
Re-elected
R49
Gain
R50
Gain
R40 R39 R38 R37 R36 R35 R34 R33 R32 R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

2002

edit

The November 5, 2002 elections were fiercely contested and resulted in a victory for the Republicans, who gained two seats and thus a narrow majority.

The Democrats had originally hoped to do well, as the party holding the presidency historically loses seats in midterm elections, and the Republicans had 20 seats up for election compared to 14 Democratic seats. In addition, four incumbent Republicans and no Democrats announced their retirement before the election. However, the Republicans were able to hold the four open seats, all of which were in the South. Ultimately, Republicans would pick up three seats and lose one, resulting in a net gain of two seats. Together with gains made in the House of Representatives, this election was one of the few mid-term elections in the last one hundred years in which the party in control of the White House gained Congressional seats (the others were 1902, 1934, and 1998). This was the first time since 1962 in which a first-term president's party made net gains in the Senate.

This was the most recent Senate election cycle in which at least one incumbent senator from each party lost in the general election. This was also the second consecutive mid-term election held in a president's first term in which the Republican party both had a net gain of seats and regained control of the United States Senate from the Democratic Party. This was the only election cycle ever where the party of the incumbent President gained new control of a house of Congress in a midterm election.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37 D36 D35 D34 D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Hold
D49
Gain
I1
Majority with Republican Vice President→ R50
Gain
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Hold
R45
Hold
R46
Hold
R47
Hold
R48
Hold
R49
Gain
R40
Re-elected
R39
Re-elected
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

2004

edit

The November 2, 2004 coincided with the presidential re-election of George W. Bush and the United States House election. This was the third consecutive election for Senate Class 3 where the Democrats failed to end up with a net gain. This also marked the first time since 1980 in which a presidential candidate from either party won with coattails in the Senate.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
Re-elected
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32
Re-elected
D31
Re-elected
D41
Re-elected
D42
Re-elected
D43
Gain
D44
Gain
I1 R55
Gain
R54
Gain
R53
Gain
R52
Gain
R51
Gain
Majority →
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Re-elected
R45
Re-elected
R46
Re-elected
R47
Re-elected
R48
Re-elected
R49
Hold
R50
Gain
R40
Re-elected
R39
Re-elected
R38
Re-elected
R37
Re-elected
R36 R35 R34 R33 R32 R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

2006

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The November 7, 2006 elections were part of the Democratic sweep of the 2006 elections, in which Democrats made numerous gains and no Congressional or gubernatorial seat held by a Democrat was won by a Republican.[1] Six Republican incumbents were defeated by Democrats. An incumbent lost his Democratic primary, but created his own party and won re-election. Democrats kept their two open seats and Republicans held onto their lone open seat. An Independent was elected to replace an Independent.Two new women were elected to seats previously held by men. This brought the total number of female senators to an all-time high of 16. Following the elections, no party held a majority of seats for the first time since January 1955. The Democrats were able to control the chamber because the two Independents caucused with the Democrats. The Democrats needed at least 51 seats to control the Senate because Vice President Dick Cheney would have broken any 50–50 tie in favor of the Republicans.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28
Re-elected
D29
Re-elected
D30
Re-elected
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32
Re-elected
D31
Re-elected
D41
Re-elected
D42
Hold
D43
Hold
D44
Gain
D45
Gain
D46
Gain
D47
Gain
D48
Gain
D49
Gain
I2
Re-elected
New party
Majority (with Independents) ↑ I1
Hold
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Re-elected
R45
Re-elected
R46
Re-elected
R47
Re-elected
R48
Re-elected
R49
Hold
R40 R39 R38 R37 R36 R35 R34 R33 R32 R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

2008

edit

Going into the November 4, 2008 elections, the Senate had 49 Democrats, 49 Republicans, and 2 Independents who caucused with the Democrats, giving the Democratic caucus the slightest 51-49 majority.[2] Of the seats up for election in 2008, 23 were held by Republicans and 12 by Democrats. The Republicans, who openly conceded early on that they wouldn't be able to regain the majority,[3][4] lost eight seats. This election was the second cycle in a row in which no seats switched from Democratic to Republican. In addition, this was the largest Democratic Senate gain since 1986, when they also won eight seats. Finally, these elections marked the first time since 1964 in which a Democratic presidential candidate won the White House with Senate coattails.

When the new senators were first sworn in, the balance was 58–41 in favor of the Democrats, because of the unresolved Senate election in Minnesota. The April 2009 defection of a Republican to the Democratic party and the July 2009 resolution of the Minnesota election in favor of the Democrat increased the Democratic majority to 60–40. Republicans gained a seat in a January 2010 special election in Massachusetts, making the balance 59-41 before the start of the next election cycle.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37 D36 D35 D34 D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
D49
Re-elected
D50
Gain
Majority → D51
Gain
R41
Hold
I2 I1 D57
Gain
D56
Gain
D55
Gain
D54
Gain
D53
Gain
D52
Gain
R40
Hold
R39
Re-elected
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R21 R22 R23 R24 R25 R26 R27 R28 R29
Re-elected
R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

2010

edit

The November 2, 2010 elections featured 19 incumbent Democrats (7 of whom retired or were defeated in the primary) and 18 incumbent Republicans (eight of whom retired or were defeated in the primary). Republicans won four seats held by retiring Democrats and Republicans defeated two incumbent Democrats, for a Republican net gain of six seats. This was the largest number of Republican net gains since the 1994 elections and also the first time since that election that Republicans successfully defended all of their own seats. This was the fourth consecutive election of "Class 3" senators where Democrats failed to gain seats and the third consecutive mid-term election held in a president's first term where Republicans picked up seats. Despite Republican gains, the Democrats retained a majority of the Senate with 51 seats plus 2 independents who caucused with them, compared to the 47 Republican seats.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40 D39 D38 D37 D36 D35 D34 D33 D32 D31
D41 D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Re-elected
D48
Re-elected
D49
Re-elected
D50
Hold
Majority → D51
Ran
R41
Hold
R42
Gain
R43
Gain
R44
Gain
R45
Gain
R46
Gain
R47
Gain
I2 I1
R40
Hold
R39
Hold
R38
Hold
R37
Hold
R36
Hold
R35
Hold
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R21 R22 R23
Re-elected
R24
Re-elected
R25
Re-elected
R26
Re-elected
R27
Re-elected
R28
Re-elected
R29
Re-elected
R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

2012

edit

In the November 6, 2012 elections, Democrats had 21 seats up for election, plus 1 Independent and 1 Independent Democrat (who both caucused with the Democrats), while the Republicans had only 10 seats up for election. The Democrats gained a net of 2 seats including a gain from the Independent Democrat, leaving them with a total of 53 seats. The Republicans lost a net of 2 seats, ending with a total of 45 seats. The Independent retained a lone seat and gained a seat from the Republicans, bringing their total to 2 seats. The Independents would caucus with the Democrats, so that majority caucus had a combined total of 55 seats. This was the third consecutive election of "Class 1" senators where Democrats gained seats. This was the third consecutive Senate election held in a presidential election year where the party belonging to the winning presidential candidate gained seats. This was the first time since 1936 where a Democratic presidential candidate who won a second term also had Senate coattails in both occasions (although Franklin Roosevelt won a third and fourth term in 1940 and 1944 respectively, he lost Senate seats on both occasions). This was the first time since 1964 in which either party had to defend more than two-thirds of the Senate seats up for grabs, but managed to make net gains.[5][6]

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32
Re-elected
D31
Re-elected
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Hold
D47
Hold
D48
Hold
D49
Hold
D50
Hold
Majority → D51
Gain
R41
Re-elected
R42
Re-elected
R43
Hold
R44
Hold
R45
Gain
I2
Gain
I1
Re-elected
D53
Gain
D52
Gain
R40
Re-elected
R39
Re-elected
R38
Re-elected
R37 R36 R35 R34 R33 R32 R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

2014

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D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Hold
I1 I2 R54
Gain
R53
Gain
R52
Gain
R51
Gain
Majority →
R41
Re-elected
R42
Re-elected
R43
Hold
R44
Hold
R45
Hold
R46
Gain
R47
Gain
R48
Gain
R49
Gain
R50
Gain
R40
Re-elected
R39
Re-elected
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

2016

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The November 8, 2016 elections were held with the presidential election of Donald Trump. 34 seats were contested. Republicans held the Senate majority with 54 seats before this election. Democrats won a net gain of two seats. Only two incumbents lost their seats and 2016 marked the first time since 1986 that Democrats made a net gain of seats in class 3. This is the first and only election since the passage of the Seventeenth Amendment in 1913 where the winning party in every Senate election mirrored the winning party for their state in the presidential election.[7][8] This election marks the first time since 2000 in which the party in opposition to the elected or re-elected presidential candidate made net gains in the Senate, with both cases being a Republican president and Democratic gains in the Senate. Also in both cases, the president won in the electoral college but lost the popular vote.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34 D33 D32 D31
D41
Re-elected
D42
Hold
D43
Hold
D44
Hold
D45
Gain
D46
Gain
I1 I2 R52
Hold
R51
Hold
Majority →
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Re-elected
R45
Re-elected
R46
Re-elected
R47
Re-elected
R48
Re-elected
R49
Re-elected
R50
Re-elected
R40
Re-elected
R39
Re-elected
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

2018

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Elections were held November 6, 2018, for all 33 Class 1 seats, along with two special elections for the Class 2 seats of Minnesota and Mississippi. Republicans expanded their majority, defeating four Democratic incumbents in Florida, Indiana, Missouri, and North Dakota. However, Democrats made gains in Arizona and Nevada, and defended competitive seats in states won by Donald Trump in the 2016 presidential election, such as Michigan, Montana, Ohio, and West Virginia, the latter of which was a major upset.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25
Re-elected
D26
Re-elected
D27
Re-elected
D28
Re-elected
D29
Re-elected
D30
Re-elected
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33
Re-elected
D32
Re-elected
D31
Re-elected
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Gain
D45
Gain
I1
Re-elected
I2
Re-elected
R53
Gain
R52
Gain
R51
Gain
Majority →
R41 R42 R43 R44
Re-elected
R45
Re-elected
R46
Re-elected
R47
Re-elected
R48
Hold
R49
Hold
R50
Gain
R40 R39 R38 R37 R36 R35 R34 R33 R32 R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

2020

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Elections were held November 3, 2020, with the 33 Class 2 seats being contested, along with special elections for the Class 3 seats of Arizona and Georgia. Democrats made gains in Arizona and Colorado, while Republicans flipped the Alabama seat that was lost to them in the 2017 special election. The two concurrent elections in Georgia were left to runoffs due to the state's two-round system, which were held on January 5, 2021. Control of the Senate was not known until these highly competitive elections were held, as neither party had gained a majority of seats after the elections. In the runoffs, Democrats gained both seats and thus narrow control of the Senate due to the election of Vice President Kamala Harris, who has the ability to cast tie-breaking votes.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34
Re-elected
D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Hold
D45
Gain
D46
Gain
D47
Gain
D48
Gain
I1 I2
Majority (with independents and vice president)[c]
R50
Gain
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Re-elected
R45
Re-elected
R46
Re-elected
R47
Hold
R48
Hold
R49
Hold
R40
Re-elected
R39
Re-elected
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R30 R29 R28 R27 R26 R25 R24 R23 R22 R21
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

2022

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Elections were held on November 8, 2022, with all 34 Class 3 seats up for election, along with a special election for Oklahoma's Class 2 seat. Democrats gained an open seat in Pennsylvania while retaining their 14 seats in this class, while Republicans held their remaining 20 seats. This was the first election since 2012 in which the Senate Democratic Caucus won an outright majority, and the first since 1990 in which only one seat changed party hands.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected
D39
Re-elected
D38
Re-elected
D37
Re-elected
D36
Re-elected
D35
Re-elected
D34 D33 D32 D31
D41
Re-elected
D42
Re-elected
D43
Re-elected
D44
Re-elected
D45
Re-elected
D46
Re-elected
D47
Elected
D48
Hold
D49
Gain
I1
Majority (with independents)[d]
R41
Re-elected
R42
Re-elected
R43
Re-elected
R44
Re-elected
R45
Hold
R46
Hold
R47
Hold
R48
Hold
R49
Hold
I2
R40
Re-elected
R39
Re-elected
R38
Re-elected
R37
Re-elected
R36
Re-elected
R35
Re-elected
R34
Re-elected
R33
Re-elected
R32
Re-elected
R31
Re-elected
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

2024

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Elections will be held on November 5, 2024, with all 33 Class 1 seats up for election, along with a special election for Nebraska's Class 2 seat.

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 TBD TBD
TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD
TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD
Majority →
TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD
TBD TBD R38 R37 R36 R35 R34 R33 R32 R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

See also

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Notes

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  1. ^ a b c d e f g Appointee elected
  2. ^ Appointee defeated
  3. ^ As the two independents senators (Angus King and Bernie Sanders) have caucused with the Democratic Party since joining the Senate, the Democratic caucus consists of 50 seats, which became a working majority once the presidency of Joe Biden began on January 20, with Vice President Kamala Harris casting tie-breaking votes.
  4. ^ As the two independent senators (Angus King and Bernie Sanders) have caucused with the Democratic Party since joining the Senate, the Democratic caucus consists of 51 seats.

References

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  1. ^ Don Rose (December 26, 2006). "Democratic sweep may be long-lasting". Chicago Tribune. Retrieved April 9, 2014.
  2. ^ Sherman, Emily (October 8, 2008). "'Perfect storm' could give Dems 'magic 60' in Senate". CNN. Retrieved November 19, 2008.
  3. ^ Newton-Small, Jay (October 15, 2007). "The Republicans' Big Senate Fear". TIME. Archived from the original on October 16, 2007.
  4. ^ Hook, Janet (July 6, 2008). "Senate outlook bad for GOP". Los Angeles Times.
  5. ^ Weisman, Jonathan (November 6, 2012). "Democrats Keep Control of the Senate". The New York Times.
  6. ^ Bendavid, Naftali (November 6, 2012). "Democrats Retain Control of U.S. Senate". The Wall Street Journal.
  7. ^ "WaunaKeegan Results". WaunaKeegan. Archived from the original on March 22, 2017. Retrieved January 13, 2017.
  8. ^ Enten, Harry (November 10, 2016). "There Were No Purple* States On Tuesday". FiveThirtyEight.