General elections were held in Buenos Aires Province on 7 September 2025, to renew 46 seats in the Chamber of Deputies and 23 in the Senate. In addition, councilors and school counselors were elected in the municipalities of Buenos Aires.
It is the first time since the restoration of democracy in 1983 that the provincial elections in Buenos Aires were held on a date other than the national elections.
The Justicialist Party won 47% of the vote, followed by La Libertad Avanza of President Javier Milei at 34%.
The electoral victory of the left sparked widespread panic across financial markets, causing the peso to plunge by nearly 10% in a matter of hours. This sharp decline was fueled by concerns among investors about the potential downfall of President Javier Milei's pro-market, business-friendly libertarian administration.
Election schedule +DateEventJuly 9, 2025Deadline for submitting electoral alliances.July 19, 2025Deadline for the submission of candidates for provincial deputies and senators.August 8, 2025Presentation of party ballots.September 5, 2025End of the election campaign period, broadcasting of campaign ads, and publication of polls and election surveys.September 7, 2025Holding of provincial elections.
Positions to Choose From ElectoralSectionChamber of DeputiesSenate Deputies To be Renewed Senators To be Renewed 1 15 — 88 2 1111 5 — 3 1818 9 — 4 14 — 77 5 11 — 55 6 1111 6 — 7 6 — 33 8 - Capital 66 3 — Total 92 46 46 23
Results Chamber of Deputies
Senate
See also 2025 Buenos Aires City elections 2025 Argentine provincial elections 2025 Argentine legislative election
References