2025 Argentine legislative election

The Argentine legislative elections of 2025 will be held on Sunday, October 26 of that year with the objective of renewing 127 of the 257 seats in the Chamber of Deputies for the legislative period 2025-2029, along with 24 of the 72 seats in the Senate of the Nation for the period 2025-2031. Prior to the general elections in October, on Sunday On August 3 the primary elections (PASO) will be held to define the candidates for each political space.

These midterm elections will be the first national elections in which voting will be done using the Single Paper Ballot established by Law 27,781 of October 2024, replacing party ballots. On this occasion, the following provinces must, together with the City of Buenos Aires, renew their three senators: Chaco, Entre Ríos, Neuquén, Río Negro, Salta, Santiago del Estero and Tierra del Fuego, Antarctica and the South Atlantic Islands.

Background
These midterm elections will be the first during the presidency of Javier Milei.

Electoral system

Chamber of Deputies
 Province Seats Seatsat stake Buenos Aires 70 35 City of Buenos Aires 25 13 Catamarca 5 3 Chaco 7 4 Chubut 5 2 Córdoba 18 9 Corrientes 7 3 Entre Ríos 9 5 Formosa 5 2 Jujuy 6 3 La Pampa 5 3 La Rioja 5 2 Mendoza 10 5 Misiones 7 3 Neuquén 5 3 Río Negro 5 2 Salta 7 3 San Juan 6 3 San Luis 5 3 Santa Cruz 5 3 Santa Fe 19 9 Santiago del Estero 7 3 Tierra del Fuego 5 2 Tucumán 9 4 Total 257 127

 Outgoing deputies Province Deputy Party Seeking re-election Buenos Aires   Union for the Homeland  Buenos Aires   Union for the Homeland  Buenos Aires   PRO  Buenos Aires   Civic Coalition ARI  Buenos Aires   Civic Coalition ARI  Buenos Aires   PRO  Buenos Aires   Workers' Left Front–Unity  Buenos Aires   Workers' Left Front–Unity  Buenos Aires   La Libertad Avanza  Buenos Aires   PRO  Buenos Aires   Union for the Homeland  Buenos Aires   Union for the Homeland  Buenos Aires   Union for the Homeland  Buenos Aires   Civic Coalition ARI  Buenos Aires   Union for the Homeland  Buenos Aires   Democracy Forever  Buenos Aires   PRO  Buenos Aires   Federal Encounter  Buenos Aires   Union for the Homeland  Buenos Aires   Union for the Homeland  Buenos Aires   Union for the Homeland  Buenos Aires   Union for the Homeland  Buenos Aires   Union for the Homeland  Buenos Aires   La Libertad Avanza  Buenos Aires   Union for the Homeland  Buenos Aires   Radical Civic Union  Buenos Aires   Federal Encounter  Buenos Aires   PRO  Buenos Aires   PRO  Buenos Aires   Union for the Homeland  Buenos Aires   PRO  Buenos Aires   Federal Encounter  Buenos Aires   Democracy Forever  Buenos Aires   Union for the Homeland  Buenos Aires   Union for the Homeland  City of Buenos Aires   PRO  City of Buenos Aires   La Libertad Avanza  City of Buenos Aires   Workers' Left Front–Unity  City of Buenos Aires   Democracy Forever  City of Buenos Aires   La Libertad Avanza  City of Buenos Aires   Union for the Homeland  City of Buenos Aires   PRO  City of Buenos Aires   United Republicans  City of Buenos Aires   Union for the Homeland  City of Buenos Aires   Civic Coalition ARI  City of Buenos Aires   Union for the Homeland  City of Buenos Aires   Democracy Forever  City of Buenos Aires   PRO  Catamarca   Union for the Homeland  Catamarca   Union for the Homeland  Catamarca   League of the Interior  Chaco   Union for the Homeland  Chaco   Union for the Homeland  Chaco   Democracy Forever  Chaco   PRO  Chubut   Union for the Homeland  Chubut   PRO  Córdoba   Federal Encounter  Córdoba   PRO  Córdoba   Radical Civic Union  Córdoba   Radical Civic Union  Córdoba   Union for the Homeland  Córdoba   Federal Encounter  Córdoba   Radical Civic Union  Córdoba   Federal Encounter  Córdoba   PRO  Córdoba   PRO  Corrientes   Democracy Forever  Corrientes   PRO  Corrientes   Union for the Homeland  Entre Ríos   Democracy Forever  Entre Ríos   Democracy Forever  Entre Ríos   Union for the Homeland  Entre Ríos   PRO  Entre Ríos   Union for the Homeland  Formosa   Democracy Forever  Formosa   Union for the Homeland  Jujuy   Union for the Homeland  Jujuy   Radical Civic Union  Jujuy   Workers' Left Front–Unity  La Pampa   PRO  La Pampa   Union for the Homeland  La Rioja   Union for the Homeland  La Rioja   Union for the Homeland  Mendoza   Union for the Homeland  Mendoza   Radical Civic Union  Mendoza   La Libertad Avanza  Mendoza   Union for the Homeland  Mendoza   Radical Civic Union  Misiones   League of the Interior  Misiones   Federal Innovation  Misiones   La Libertad Avanza  Neuquén   Union for the Homeland  Neuquén   League of the Interior  Neuquén   Neuquén People's Movement  Río Negro   Federal Innovation  Río Negro   PRO  Salta   Federal Innovation  Salta   Union for the Homeland  Salta   La Libertad Avanza  San Juan   Union for the Homeland  San Juan   Union for the Homeland  San Juan   Production and Labour  San Luis   La Libertad Avanza  San Luis   PRO  San Luis   Union for the Homeland  Santa Cruz   For Santa Cruz  Santa Cruz   Union for the Homeland  Santa Cruz   Radical Civic Union  Santa Fe   United  Santa Fe   Future and Freedom  Santa Fe   Federal Encounter  Santa Fe   PRO  Santa Fe   Democracy Forever  Santa Fe   PRO  Santa Fe   Union for the Homeland  Santa Fe   Union for the Homeland  Santa Fe   Union for the Homeland  Santiago del Estero   Union for the Homeland  Santiago del Estero   Union for the Homeland  Santiago del Estero   Union for the Homeland  Tierra del Fuego   La Libertad Avanza  Tierra del Fuego   Union for the Homeland  Tucumán   Independence  Tucumán   Independence  Tucumán   CREO  Tucumán   Radical Civic Union 

Senate
 Outgoing senators Province Senator Party Seeking re-election City of Buenos Aires   Radical Civic Union  City of Buenos Aires   Union for the Homeland  City of Buenos Aires   PRO  Chaco   Union for the Homeland  Chaco   Union for the Homeland  Chaco   Radical Civic Union  Entre Ríos   Union for the Homeland  Entre Ríos   PRO  Entre Ríos   Radical Civic Union  Neuquén   Neuquén People's Movement  Neuquén   Union for the Homeland  Neuquén   Union for the Homeland  Río Negro   Union for the Homeland  Río Negro   Union for the Homeland  Río Negro   Together We Are Río Negro  Salta   Union for the Homeland  Salta   Union for the Homeland  Salta   Federal Change  Santiago del Estero   Union for the Homeland  Santiago del Estero   Union for the Homeland  Santiago del Estero   Union for the Homeland  Tierra del Fuego   Radical Civic Union  Tierra del Fuego   Union for the Homeland  Tierra del Fuego   Union for the Homeland 

Opinion polls
Polling chart
Opinion polling for the 2025 Argentine legislative election using Local regression (LOESS) of polls conducted. Kirchnerism and Federal Peronism entries merged into UXP. Data up to 11 April 2025.

2025
Polling firmFieldwork dateSample sizelink=La Libertad Avanza|45x45pxKirchnerismFederal Peronismlink=Republican Proposal|45x45pxlink=Radical Civic Union|45x45pxlink=Workers' Left Front|45x45pxOthersUndecidedLeadTendencias18–23 April 20259490 36.133.72.19.22.45.7 –10.82.4Proyección29 March – 4 April 2025239729.331.7 –6.43.72.91.924.22.4Tendencias29 March – 4 April 20258865 36.834.62.411.15.6 -9.52.2Analogías28–31 March 20252864 30.830.2 -10.85.34.3 -18.60.6Opina  Argentina1–4 March 20252085 38324744376Analogías25–28 February 20252733 33.130.4 -10.63.634.614.92.7Tendencias24–28 February 202511077 40.935.11.98.25.8 -8.15.8PoliarquíaFebruary 2025—3616993921720Isasi BurdmanFebruary 2025— 37101112432325Proyección17–22 February 2025202928.817.915.45.83.32.22.723.910.9Management & Fit10–21 February 2025220041.626.79.46.42.63.53.16.614.9Pulso Research1–7 February 2025177731.418.45.46.33.34.59.421.213ArescoJanuary 2025—47.236.1—7.96—2.8—11.1Isasi BurdmanJanuary 2025—36912104342124Management & Fit26 January 2025—42.126.59.871.82.83715.6Analogías19–23 January 2025264533.631.1—8.74.44.4—17.82.5Pulso Research6–12 January 2025190030.215.9753.648.226.114.3

2024
Polling firmFieldwork dateSample sizelink=La Libertad Avanza|45x45pxKirchnerismFederal Peronismlink=Republican Proposal|45x45pxlink=Radical Civic Union|45x45pxlink=Workers' Left Front|45x45pxOthersUndecidedLeadD'Alessio  Irol - BerenszteinDecember 202410353524—17849211Isasi  BurdmanDecember 202420653710119352126Fixer11–20 December 2024110037352635—82Synospsis5–13 December 2024—39.826.8115.72.92.946.913Pulso  Research4–11 December 2024170032.620.863.82.83.97.722.311.8ArescoDecember 2024—45.434.3—74.1—9.1—11.1CB  Consultora2–6 December 2024156239.418.596.61.85.43.81520.9Sentimetro3 December 202411004614672631632Isasi-Burdman20 November 202420913471514242119Opinión  Lab12 November 2024180034241173371010Pulso  Research4–11 November 2024209132.315.76.35.71.82.910.22516.6Flxer5 November 2024179034333725—141PoliarquíaOctober 2024—3418896621716Opina  Argentina25 October 2024176433335105338TieDC  Consultores22 October 2024—54.28.425.35.63.72.8——28.9Proyección  Consultores16 October 2024182227.220.51485.73—21.66.7Isasi/Burdman12–17 October 2024205728916134432312Pulso  Research2–9 October 202420003020.76.36.32.94.89.219.79.3PoliarquíaSeptember 2024—351612104411919Pulso  Research2–9 September 2024211229.520.48.27.44.75.17.7179.1PoliarquíaAugust 2024—39135132512126Lucas  Romero8–14 August 2024118630.915.822.29.43.64.72.211.28.7Pulso  Research2–8 August 2024280029.318.99.28.14.15.16.618.710.4PoliarquíaJuly 2024—36158143521821Pulso  Research1–10 July 2024235031.716.511.26.13.86.38.216.315.2Pulso  Research1–10 June 2024266133.518.6854.75.35.419.514.9Opinión  Lab3 June 2024153837171373481220Pulso  Research1–10 May 2024211334.8178.56.84.45.7—22.817.8Pulso  Research4–15 April 2024201431.715.112.155.36—24.816.6Pulso  Research4–14 March 2024191434.219.78.75.54.23.9—23.714.5

References

Category:2025 elections in South America
Category:2020s in Argentina