Province
Legislature
Level
Seats
Term (years)
Renewal
Electoral system
Constituency
Buenos Aires
Legislature
Chamber of Deputies
Lower
92
4
Half every 2 years
Proportional representation
Electoral sections
Senate
Upper
46
4
Half every 2 years
Proportional representation
Electoral sections
Autonomous City of Buenos Aires
Legislature
Unicameral
60
4
Half every 2 years
Proportional representation
City
Catamarca
Legislature
Chamber of Deputies
Lower
41
4
Half every 2 years
Proportional representation
Province
Senate
Upper
16
4
Half every 2 years
First-past-the-post voting
Departments
Chaco
Chamber of Deputies
Unicameral
32
4
Half every 2 years
Proportional representation
Province
Chubut
Legislature
Unicameral
27
4
Complete
Province
Córdoba
Legislature
Unicameral
70
4
Complete
Parallel voting :
44: Proportional representation
Province
26: First-past-the-post voting
Departments
Corrientes
Legislature
Chamber of Deputies
Lower
30
4
Half every 2 years
Proportional representation
Province
Senate
Upper
15
6
A third every 2 years
Proportional representation
Province
Entre Ríos
Legislature
Chamber of Deputies
Lower
34
4
Complete
Province
Senate
Upper
17
4
Complete
First-past-the-post voting
Departments
Formosa
Chamber of Deputies
Unicameral
30
4
Half every 2 years
Incomplete list. 2/3 of seats for top party, 1/3 of seats for second most voted party
Province
Jujuy
Legislature
Unicameral
48
4
Half every 2 years
Proportional representation
Province
La Pampa
Chamber of Deputies
Unicameral
30
4
Complete
Proportional representation
Province
La Rioja
Legislature
Unicameral
36
4
Half every 2 years
24: Proportional representation
Departments
12: First-past-the-post voting
Departments
Mendoza
Legislature
Chamber of Deputies
Lower
48
4
Half every 2 years
Proportional representation
Electoral districts
Senate
Upper
38
4
Half every 2 years
Proportional representation
Electoral districts
Misiones
Chamber of Representatives
Unicameral
40
4
Half every 2 years
Proportional representation
Province
Neuquén
Legislature
Unicameral
35
4
Complete
Proportional representation
Province
Río Negro
Legislature
Unicameral
46
4
Complete
Parallel voting :
22: Proportional representation
Province
24: Proportional representation
Electoral circuits
Salta
Legislature
Chamber of Deputies
Lower
60
4
Half every 2 years
47: Proportional representation
Departments
13: First-past-the-post voting
Departments
Senate
Upper
23
4
Half every 2 years
First-past-the-post voting
Departments
San Juan
Chamber of Deputies
Unicameral
36
4
Complete
Parallel voting :
17: Proportional representation
Province
19: First-past-the-post voting
Departments
San Luis
Legislature
Chamber of Deputies
Lower
43
4
Half every 2 years
Proportional representation
Departments
Senate
Upper
9
4
Half every 2 years
First-past-the-post voting
Departments
Santa Cruz
Chamber of Deputies
Unicameral
24
4
Complete
Parallel voting :
10: Proportional representation
Province
14: First-past-the-post voting
Municipalities
Santa Fe
Legislature
Chamber of Deputies
Lower
50
4
Complete
Province
Senate
Upper
19
4
Complete
First-past-the-post voting
Departments
Santiago del Estero
Chamber of Deputies
Unicameral
40
4
Complete
Proportional representation
Province
Tierra del Fuego
Legislature
Unicameral
15
4
Complete
Proportional representation
Province
Tucumán
Legislature
Unicameral
49
4
Complete
Proportional representation
Electoral sections