Portrait
Name(lifespan)
State
House of Congress
Term
Party
Notes
Term start
Length of service (days)
Robert Aderholt (born 1965)
Alabama
House of Representatives
January 3, 1997
9,980 ( 27 years, 119 days)
Republican
Lisa Murkowski (born 1957)
Alaska
Senate
December 20, 2002
7,803 ( 21 years, 133 days)
Republican
Appointment by Frank Murkowski
Raúl Grijalva (born 1948)
Arizona
House of Representatives
January 3, 2003
7,789 ( 21 years, 119 days)
Democratic
John Boozman (born 1950)
Arkansas
Senate
November 20, 2001
8,198 ( 22 years, 163 days)
Republican
Elected to the House of Representatives in a special election in 2001 after Asa Hutchinson resigned to become the head of the Drug Enforcement Administration . Later elected to the Senate in 2010 .
Nancy Pelosi (born 1944)
California
House of Representatives
June 2, 1987
13,483 ( 36 years, 334 days)
Democratic
Elected in a special plection in 1987 following the death of Congresswoman Sala Burton . Later elected as the 52nd Speaker of the United States House of Representatives between 2007-2011 and 2019-2023.
Diana DeGette (born 1957)
Colorado
House of Representatives
January 3, 1997
9,980 ( 27 years, 119 days)
Democratic
Rosa DeLauro (born 1943)
Connecticut
House of Representatives
January 3, 1991
12,172 ( 33 years, 119 days)
Democratic
Tom Carper (born 1947)
Delaware
Senate
January 3, 2001
8,519 ( 23 years, 119 days)
Democratic
Previously served as the a member of the United States House of Representatives as Delaware 's at-large member from 1983-1993.
Mario Díaz-Balart (born 1961)
Florida
House of Representatives
January 3, 2003
7,789 ( 21 years, 119 days)
Republican
Sanford Bishop (born 1947)
Georgia
House of Representatives
January 3, 1993
11,441 ( 33 years, 119 days)
Democratic
Mazie Hirono (born 1947)
Hawaii
Senate
January 3, 2007
6,328 ( 17 years, 119 days)
Democratic
Elected to the U.S. House of Representatives in 2006 . Later elected the United States Senate in 2012 .
Mike Crapo (born 1950)
Idaho
Senate
January 3, 1993
11,441 ( 31 years, 119 days)
Republican
Elected to the House of Representatives in 1992 . Later elected to the Senate in 1998 .
Dick Durbin (born 1944)
Illinois
Senate
January 3, 1983
15,094 ( 41 years, 119 days)
Democratic
Elected to the U.S. House of Representatives in 1982 . Later elected the United States Senate in 1996 .
André Carson (born 1947)
Indiana
House of Representatives
March 11, 2008
5,895 ( 16 years, 51 days)
Democratic
Elected in a special election in 2008 following the death of Congresswoman Julia Carson .
Chuck Grassley (born 1933)
Iowa
Senate
January 3, 1975
18,016 ( 49 years, 119 days)
Republican
Elected to the House of Representatives in 1974 . Later elected to the Senate in 1980 . Presently the Dean of the United States Senate .
Jerry Moran (born 1954)
Kansas
Senate
January 3, 1997
9,980 ( 27 years, 119 days)
Republican
Elected to the House of Representatives in 1996 . Later elected to the Senate in 2010 .
Hal Rogers (born 1937)
Kentucky
House of Representatives
January 3, 1981
15,824 ( 43 years, 119 days)
Republican
Presently the Dean of the House of Representatives .
Steve Scalise (born 1965)
Louisiana
House of Representatives
May 3, 2008
5,842 ( 15 years, 364 days)
Republican
Elected in a special election in 2008 following the election of Bobby Jindal as Governor of Louisiana . Presently serving as the House Majority Leader .
Susan Collins (born 1952)
Maine
Senate
January 3, 1997
9,980 ( 27 years, 119 days)
Republican
Steny Hoyer (born 1939)
Maryland
House of Representatives
May 19, 1981
15,688 ( 42 years, 348 days)
Democratic
Elected in a special election in 1981 after Congresswoman Gladys Spellman fell into a coma and her seat was declared vacant by the U.S. House of Representatives . Previously served as the House Majority Leader from 2007-2011 and 2019-2023. Currently the longest serving Democratic Member of Congress.
Edward Markey (born 1946)
Massachusetts
Senate
November 2, 1976
17,347 ( 47 years, 181 days)
Democratic
Elected in a special election to the U.S. House of Representatives in 1976 following the death of Congressman Torbert Macdonald . Later elected to the U.S. Senate in 2013 after John Kerry was confirmed served as the U.S. Secretary of State .
Debbie Stabenow (born 1950)
Michigan
Senate
January 3, 1997
9,980 ( 27 years, 119 days)
Democratic
Elected to the U.S. House of Representatives in 1996 . Later elected to the U.S. Senate in 2000 .
Betty McCollum (born 1954)
Minnesota
House of Representatives
January 3, 2001
8,519 ( 23 years, 119 days)
Democratic
Bennie Thompson (born 1948)
Mississippi
House of Representatives
April 13, 1993
11,341 ( 31 years, 18 days)
Democratic
Elected in a special election in 1993 following Congressman Mike Espy 's confirmation as U.S. Secretary of Agriculture .
Sam Graves (born 1954)
Missouri
House of Representatives
January 3, 2001
8,519 ( 23 years, 119 days)
Republican
Jon Tester (born 1956)
Montana
Senate
January 3, 2007
6,328 ( 17 years, 119 days)
Democratic
Adrian Smith (born 1970)
Nebraska
House of Representatives
January 3, 2007
6,328 ( 17 years, 119 days)
Republican
Mark Amodei (born 1958)
Nevada
House of Representatives
September 13, 2011
4,614 ( 12 years, 231 days)
Republican
Elected to the House of Representatives in a special election in 2011 after Dean Heller was appointed to the Senate .
Jeanne Shaheen (born 1947)
New Hampshire
Senate
January 3, 2009
5,597 ( 15 years, 119 days)
Democratic
Chris Smith (born 1953)
New Jersey
House of Representatives
January 3, 1981
15,824 ( 43 years, 119 days)
Republican
Martin Heinrich (born 1971)
New Mexico
Senate
January 3, 2009
5,597 ( 17 years, 119 days)
Democratic
Elected to the House of Representatives in 2008 . Later elected to the Senate in 2012 . Co-dean of the New Mexico delegation with Senator Ben Ray Luján .
Ben Ray Luján (born 1972)
New Mexico
Senate
January 3, 2009
5,597 ( 17 years, 119 days)
Democratic
Elected to the House of Representatives in 2008 . Later elected to the Senate in 2020 . Co-dean of the New Mexico delegation with Senator Martin Heinrich .
Chuck Schumer (born 1950)
New York
Senate
January 3, 1981
15,824 ( 43 years, 119 days)
Democratic
Elected to the House of Representatives in 1980 . Later elected to the Senate in 1998 . Currently serving as Senate Majority Leader .
Virginia Foxx (born 1943)
North Carolina
House of Representatives
January 3, 2005
7,058 ( 19 years, 119 days)
Republican
Co-dean of the North Carolina delegation with Congressman Patrick McHenry .
Patrick McHenry (born 1975)
North Carolina
House of Representatives
January 3, 2005
7,058 ( 19 years, 119 days)
Republican
Co-dean of the North Carolina delegation with Congresswoman Virginia Foxx . Previously Speaker pro tempore of the United States House of Representatives .
John Hoeven (born 1957)
North Dakota
Senate
January 3, 2011
4,867 ( 13 years, 119 days)
Republican
Marcy Kaptur (born 1946)
Ohio
House of Representatives
January 3, 1983
15,094 ( 41 years, 119 days)
Democratic
Currently the longest-serving woman in congressional history .
Frank Lucas (born 1960)
Oklahoma
House of Representatives
May 10, 1994
10,949 ( 29 years, 357 days)
Republican
Elected in a special election in 1994 following the resignation of Congressman Glenn English .
Ron Wyden (born 1949)
Oregon
Senate
January 3, 1981
15,824 ( 43 years, 119 days)
Democratic
Elected to the House of Representatives in 1980 . Later elected to the Senate in a special election 1996 following the resignation of Senator Bob Packwood .
Bob Casey (born 1960)
Pennsylvania
Senate
January 3, 2007
6,328 ( 17 years, 119 days)
Democratic
Jack Reed (born 1949)
Rhode Island
Senate
January 3, 1991
12,172 ( 33 years, 119 days)
Democratic
Elected to the House of Representatives in 1990 . Later elected to the Senate in 1996 .
Jim Clyburn (born 1940)
South Carolina
House of Representatives
January 3, 1993
11,441 ( 31 years, 119 days)
Democratic
John Thune (born 1961)
South Dakota
Senate
January 3, 2005
7,058 ( 19 years, 119 days)
Republican
Previously served as a member of the U.S. House of Representatives as South Dakota 's at-large member from 1997-2003.
Marsha Blackburn (born 1952)
Tennessee
Senate
January 3, 2003
7,789 ( 21 years, 119 days)
Republican
Elected to the House of Representatives in 2002 . Later elected to the Senate in 2018 .
Lloyd Doggett (born 1946)
Texas
House of Representatives
January 3, 1995
10,711 ( 29 years, 119 days)
Democratic
Co-dean of the Texas delegation with Congresswoman Sheila Jackson Lee .
Sheila Jackson Lee (born 1950)
Texas
House of Representatives
January 3, 1995
10,711 ( 29 years, 119 days)
Democratic
Co-dean of the Texas delegation with Congressman Lloyd Doggett .
Mike Lee (born 1971)
Utah
Senate
January 3, 2011
4,867 ( 13 years, 119 days)
Republican
Bernie Sanders (born 1941)
Vermont
Senate
January 3, 1991
12,172 ( 33 years, 119 days)
Independent
Elected to the House of Representatives in 1990 . Later elected to the Senate in 2006 .
Bobby Scott (born 1947)
Virginia
House of Representatives
January 3, 1993
11,441 ( 31 years, 119 days)
Democratic
Patty Murray (born 1950)
Washington
Senate
January 3, 1993
11,441 ( 31 years, 119 days)
Democratic
Currently the President pro tempore of the United States Senate .
Shelley Moore Capito (born 1953)
West Virginia
Senate
January 3, 2001
8,519 ( 23 years, 119 days)
Republican
Elected to the House of Representatives in 2000 . Later elected to the Senate in 2014 .
Tammy Baldwin (born 1953)
Wisconsin
Senate
January 3, 1999
9,250 ( 25 years, 119 days)
Democratic
Elected to the House of Representatives in 1998 . Later elected to the Senate in 2012 .
John Barrasso (born 1953)
West Virginia
Senate
June 22, 2007
6,158 ( 16 years, 314 days)
Republican
Appointed to the Senate following the death of Senator Craig L. Thomas .