Argentina is voting in 2025: Here's a guide with all you need to know

Updated: September 7, 2025

Argentina started 2025 knowing it was an electoral year, with provincial and national-level legislative elections initially set to take place on the same day. However, several provinces decided to hold separate local elections, a process known as desdoblamiento. This meant that voters in eight provinces would have to go to the polls at least twice: once to pick provincial lawmakers and authorities and a second time to select national deputies and senators.

The electoral calendar kicked off in April with elections in Santa Fe. The next stop was in May, with voting in Salta, Jujuy, Chaco, and San Luis, as well as in Buenos Aires City. Three more provinces, as well as Santa Fe one more time, are set to vote locally before the national midterms on October 26. There will be no mandatory primaries (known as PASO) at the national level in 2025, as Congress approved a bill cancelling them in February.

Here’s a handy guide from the Herald that will keep you informed and up-to-date on what’s on the agenda — and how it’s been going so far.

May 11 — Salta, Jujuy, San Luis and Chaco voted

Four provinces voted for local authorities on this local election super Sunday. Here’s how it went:

Salta:

Gustavo Sáenz: 43%

La Libertad Avanza: 23%

Jujuy:

Adriano Morone (Jujuy Crece): 38%

Kevin Ballesty (LLA): 21%

San Luis:

Frente Ahora San Luis (led by Governor Claudio Poggi): 47%

Frente Justicialista (led by former Governor Alberto Rodríguez Saá):

Chaco:

Chaco Puede + La Libertad Avanza: 46%

Frente Chaco Merece Más: 34%

Frente Primero Chaco: 11%

May 18 — Buenos Aires City

LLA won the Buenos Aires City legislative elections, taking 31% of the vote with Presidential spokesman Manuel Adorni as head of the party’s ticket. The results were a body blow to PRO, the conservative party of Mauricio Macri. It came a distant third in the city that was once its stronghold, underscoring how it competes for the same voters as Milei’s LLA.

Results:

LLA: 31%

Es Ahora Buenos Aires (Peronism): 28%

Buenos Aires Primero (PRO): 16%

June 8 — Misiones: legislative seats and municipal authorities

Local party, the Frente Renovador de la Concordia (FRC) beat a fragmented opposition and defeated its closest rival, La Libertad Avanza (LLA), which was running in the province for the first time. The party founded by former Governor Carlos Rovira thus reaffirmed its dominance in local politics, with more than 20 years in power.

Former police officer Ramón Amarilla, currently in prison accused of sedition, surprised many by securing third place.

Results:

FRC: 29%

LLA: 22%

Amarilla: 19%

June 29 — Formosa and Santa Fe: legislative seats and municipal authorities

In Formosa, the Peronist Partido Justicialista, led by Governor Gildo Insfrán, won with 67% of the vote in the legislative election, retaining its seats in the Lower House as well as its municipal councils’ membership.

Results:

Partido Justicialista: 67%

Frente Amplio Formoseño (Center-right local opposition coalition): 20%

La Libertad Avanza: 11%

Santa Fe elected municipal officials in 365 municipalities on the same day. Unidos para Cambiar Santa Fe, the coalition led by Governor Maximiliano Pullaro, won in 266 municipalities (72% of the districts). However, it came third in Rosario, the province’s most populous city, where it fought neck and neck with LLA.

Results:

Partido Justicialista: 31%

LLA: 29%

Unidos: 26%.

August 17 — Deadline for national midterm candidates to become official

Would-be lawmakers had until this date to cement their candidacies.

Read more about who snagged the key spots: Argentina’s parties confirm their 2025 midterm election candidates

August 27 — Official start of the campaigning for midterms

Argentina follows strict election laws, so official campaigning for midterm elections couldn’t begin until this date. From this day forward, prepare to see streets across Argentina filled with campaign posters from candidates across the political spectrum, as well as television ads from politicians appearing on most commercial breaks.

August 31 — Corrientes: legislative seats and provincial authorities

Juan Pablo Valdés, the candidate backed by the ruling party in Corrientes, will become the province’s next governor. He is the mayor of Ituzaingó and brother of the current governor, Gustavo Valdés. He guaranteed at least four more years of dominance by the Radical Civic Union (UCR) in provincial politics. Corrientes is one of the few places where the UCR continues to be strong, as every governor during the 21st century has come from that party.

Results:

Vamos Corrientes (Juan Pablo Valdés): 52%

Limpiar Corrientes (Martín Ignacio Ascúa): 20%

Encuentro por Corrientes (Horacio Ricardo Colombi): 17%

La Libertad Avanza (Claudio Lisandro Almirón): 10%

September 7 — Buenos Aires Province: legislative seats

The Peronist Fuerza Patria cruised to victory with an ample margin against President Javier Milei’s La Libertad Avanza (LLA) in the Buenos Aires province local legislative election, with 47% of the vote, according to preliminary results with over 90% of the vote counted.

This marks a key win for the opposition and a tough blow for LLA. The national ruling party was aspiring to make incursions into the Peronist stronghold, but came a distant second with 34%, in the wake of allegations of corruption against top officials including Milei’s sister, Karina Milei.

Ex-president Cristina Kirchner said on Monday, June 2, that she would run in the legislative elections in Buenos Aires province, but her candidacy was ruled out after Argentina’s Supreme Court upheld a corruption conviction against her, banning her from public office.

October 26 — 2025 national midterms

Argentines will renew lawmakers from the upper and the lower houses of Congress — 24 out of 72 senators and 127 out of 257 deputies. This will be Milei’s biggest electoral test to date. His role as president won’t be on the line, but a shift in the tide to the left could see any future presidential decrees or vetoes be more easily scuppered when put to lawmakers.