Province Legislature Level Seats Term 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 
