Argentina - October 2025

On 26 October, Argentina held legislative elections to renew half of the members of the Chamber of Deputies (127 seats) and one-third of the members of the Senate (24 seats). Two main political coalitions won the majority of votes across the country: the incumbent La Libertad Avanza (LLA) and the opposition Fuerza Patria/Peronismo (FP) alliance. In the Chamber of Deputies, LLA received 41.5 per cent of the vote, followed by FP with 34.9 per cent. In the Senate, LLA also led with 42.0 per cent, while FP followed with 36.9 per cent. Despite voting being mandatory, voter turnout was 67.9 per cent, down from 71.5 per cent in the 2021 mid-term legislative elections. At the time of writing, data on women elected to Congress was not available. This election marked the first time the country voted using a Single Paper Ballot (SPB), replacing the previous party ballot system.

Sources:  BBC, Buenos Aires Herald, Infobae, Resultados Elecciones, Cámara Nacional Electoral 

On 8 October, Argentina’s lower chamber of Congress approved a bill aimed at restricting the use of decrees of necessity and urgency (DNU), a legislative tool frequently employed by President Javier Milei to advance his reform agenda. The bill, which had already passed the Senate, introduces stricter controls, requiring DNUs to gain approval from both chambers of Congress rather than just one, and allowing either chamber to annul them. This amendment, seen as a measure to curb executive overreach, marks a significant challenge to Milei, who has issued around 70 such decrees during his term due to his lack of a congressional majority. The legislation now returns to the Senate for final review and approval. However, it still requires presidential promulgation, and Milei retains the option to veto the measure.

Sources: Camara de Diputados, Swissinfo, Info Bae, Pagina 12