2025 Buenos Aires provincial election

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.

2025 Buenos Aires provincial elections

← 2023 7 September 2025 2027 →

Majority party Minority party Third party   Party Fuerza Patria La Libertad Avanza Somos Buenos Aires Popular vote 47.28% 33.71% 5.26%

It is the first time since the 2003 Buenos Aires provincial elections and the second 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

Date	Event
July 9, 2025	Deadline for submitting electoral alliances.
July 19, 2025	Deadline for the submission of candidates for provincial deputies and senators.
August 8, 2025	Presentation of party ballots.
September 5, 2025	End of the election campaign period, broadcasting of campaign ads, and publication of polls and election surveys.
September 7, 2025	Holding of provincial elections.

Positions to Choose From

Electoral Section	House of Representatives		Senate
	Members of Congress	To be Renewed	Senators	To be Renewed
1	15	—	8	8
2	11	11	5	—
3	18	18	9	—
4	14	—	7	7
5	11	—	5	5
6	11	11	6	—
7	6	—	3	3
8 - Capital	6	6	3	—
Total	92	46	46	23

Results

Chamber of Deputies

Party		Votes	%	Seats
	Fuerza Patria	2,065,415	49.65	21
	La Libertad Avanza	1,272,584	30.59	18
	Somos Buenos Aires	238,708	5.74	5
	Workers' Left Front	211,035	5.07	2
	Nuevos Aires	98,534	2.37	–
	Unión y Libertad	60,057	1.44	–
	Potencia	50,565	1.22	–
	Libertarian Party	33,735	0.81	–
	Unión Liberal	24,649	0.59	–
	Workers' Party	24,034	0.58	–
	Movimiento Avanzada Socialista	21,001	0.50	–
	Valores Republicanos	16,746	0.40	–
	Patriot Front	15,715	0.38	–
	Construyendo Porvenir	12,356	0.30	–
	Tiempo de Todos	10,658	0.26	–
	Es Con Vos, Es Con Nosotros	3,874	0.09	–
Total		4,159,666	100.00	46
Valid votes		4,159,666	95.01
Invalid/blank votes		218,614	4.99
Total votes		4,378,280	100.00
Registered voters/turnout		7,075,220	61.88
Source:

Senate

Party		Votes	%	Seats
	Fuerza Patria	1,796,073	44.95	13
	La Libertad Avanza	1,482,513	37.11	8
	Somos Buenos Aires	280,012	7.01	2
	Workers' Left Front	144,761	3.62	–
	Potencia	60,177	1.51	–
	Unión y Libertad	50,808	1.27	–
	Unión Liberal	29,841	0.75	–
	Libertarian Party	24,956	0.62	–
	Workers' Party	21,561	0.54	–
	Es Con Vos, Es Con Nosotros	20,152	0.50	–
	Partido Valores Republicanos	18,093	0.45	–
	Movimiento Avanzada Socialista	17,604	0.44	–
	Construyendo Porvenir	16,819	0.42	–
	Patriot Front	14,927	0.37	–
	Tiempo de Todos	11,651	0.29	–
	Nuevos Aires	5,428	0.14	–
Total		3,995,376	100.00	23
Valid votes		3,995,376	90.88
Invalid/blank votes		401,132	9.12
Total votes		4,396,508	100.00
Registered voters/turnout		7,301,372	60.21
Source:

See also

• 2025 Buenos Aires City elections
• 2025 Argentine provincial elections
• 2025 Argentine legislative election