The 2025 Buenos Aires City elections were held on 18 May 2025, to elect 30 seats in the Buenos Aires City Legislature.
La Libertad Avanza, leading the country through President Javier Milei, received 30.7% of the vote. More than double the party's vote share in 2023, it proved enough to defeat both Propuesta Republicana, the city's ruling party, and Es Ahora Buenos Aires, a Peronist coalition.
Election schedule The electoral process was conducted according to the timetable established by the Electoral Tribunal in Decree 91/GCBA/2025 on 25 February 2025.
+DateEvent March 19 Formation of alliances and start of the election campaign. March 29 Closing of candidate lists for Legislature of the Autonomous City of Buenos Aires. April 18 Dissemination of links enabling eligible voters to consult the electoral register and locate their polling station. April 29 Debate between the leading candidates for Legislature of the Autonomous City of Buenos Aires. May 11 Deadline for holding the election debate between candidates. May 16 End of the election campaign. Start of the election restrictions. May 18 Local legislative elections May 20 Start of final vote counting. June 2 Deadline for publication of the final vote count.
Alliances Several electoral alliances were registered ahead of the 18 May elections:
Buenos Aires Primero—the governing alliance in the city—nominated Silvia Lospennato as its lead candidate. The coalition includes Propuesta Republicana (PRO) and Encuentro Republicano Federal, among other parties.
Es Ahora Buenos Aires—whose lead candidate was Leandro Santoro—was formed by the Justicialist Party, Frente Patria Grande, Kolina, and other parties that joined the Unión por la Patria coalition in 2023.
Let’s Return to Buenos Aires nominated former head of the city government Horacio Rodríguez Larreta as its lead legislative candidate; the coalition comprised Confianza Pública and the Federal Party.
Evolution, formed by the Unión Cívica Radical (UCR), Generación para un Encuentro Nacional (GEN), and the Socialist Party.
Unión Porteña Libertaria—whose lead candidate was Yamil Santoro—was formed by the Libertarian Party and the Christian Democratic Party.
Left and Workers’ Front – Unity (FIT-U) fielded Vanina Biasi (Workers’ Party, PO) and Luca Bonfante (Socialist Workers’ Party, PTS), among others; the coalition comprises the Workers’ Party (PO), Socialist Workers’ Party (PTS), Socialist Workers’ Movement (MST), and Socialist Left.
Principles and Values nominated businessman Alejandro Kim as its lead legislative candidate; the alliance comprised the eponymous party and the Retirees and Youth Movement.
Confluence for Equality and Sovereignty presented María Eva Koutsovitis, an engineer and teacher, as its lead candidate; the alliance comprised the Electoral Instrument for Popular Unity, the Communist Party, and Popular Left.
Nine parties contested independently, without forming alliances:
ARI Civic Coalition ran independently, with Paula Oliveto as its lead candidate.
La Libertad Avanza, the national governing party, ran independently with Manuel Adorni as its lead candidate.
Let’s Be Free ran independently after the Evita Movement left the Es Ahora Buenos Aires coalition that nominated Leandro Santoro, fielding Juan Manuel Abal Medina as its candidate.
Movimiento de Integración y Desarrollo (MID) initially planned to ally with Buenos Aires Primero but subsequently registered its own list, nominating Ricardo Caruso Lombardi for the legislature.
Unión del Centro Democrático nominated Ramiro Marra as its lead legislative candidate; Marra sought reelection following his departure from La Libertad Avanza in early 2025.
The Left in the City nominated teacher and activist Federico Winokur as its lead legislative candidate.
Federal Patriotic Front nominated its secretary general, lawyer César Biondini—son of party president Alejandro Biondini—as its lead candidate.
Movimiento Plural nominated pharmacist and trade unionist Marcelo Peretta, director of the Argentine Union of Pharmacists and Biochemists, as its lead candidate.
El Movimiento nominated Mila Zurbriggen, a nationalist activist and former member of La Libertad Avanza, as its lead candidate.
Results
By comuna La Libertad AvanzaAdorniEs Ahora Buenos AiresSantoroBuenos Aires PrimeroLospennatoVolvamos Buenos AiresLarretaOthersTotalMarginCommune Votes %Votes %Votes %Votes %Votes %Votes % Comuna 1 32.950 32,35 27.275 26,78 17.261 16,95 7.625 7,49 16.736 16,43 101.847 5.675 5,57 Comuna 2 32.032 38,01 14.116 16,75 19.003 22,55 6.075 7,21 13.053 15,49 84.279 17.916 21,26 Comuna 3 28.407 29,80 28.786 30,20 12.948 13,58 7.389 7,75 17.797 18,67 95.327 379 0,40 Comuna 4 29.653 27,14 36.136 33,07 14.590 13,35 9.287 8,50 19.601 17,94 109.267 6.483 5,93 Comuna 5 27.113 26,92 32.749 32,51 14.848 14,74 8.127 8,07 17.887 17,76 100.724 5.636 5,60 Comuna 6 31.181 28,87 30.468 28,21 19.184 17,76 8.653 8,01 18.533 17,16 108.019 713 0,66 Comuna 7 34.619 30,22 34.376 30,01 16.217 14,16 9.272 8,09 20.076 17,52 114.560 243 0,21 Comuna 8 24.822 27,26 32.339 35,52 9.340 10,26 8.192 9,00 16.364 17,97 91.057 7.517 8,26 Comuna 9 28.751 29,75 30.005 31,04 12.581 13,02 8.083 8,36 17.238 17,83 96.658 1.254 1,30 Comuna 10 29.277 29,91 28.992 29,62 13.848 14,15 8.293 8 17.481 17,86 97.891 285 0,29 Comuna 11 35.952 31,18 31.939 27,70 17.931 15,55 10.217 8,86 19.279 16,72 115.318 4.013 3,48 Comuna 12 39.049 30,58 34.348 26,90 22.145 17,34 11.487 9,00 20.658 16,18 127.687 4.701 3,68 Comuna 13 48.223 34,75 27.733 19,99 30.459 21,95 11.331 8,17 21.019 15,15 138.765 20.490 14,77 Comuna 14 45.017 35,40 26.303 20,69 26.681 20,98 10.036 7,89 19.112 15,03 127.149 18.714 14,72 Comuna 15 28.843 27,51 34.784 33,18 14.954 14,26 8.977 8,56 17.284 16,49 104.842 5.941 5,67 Prisoners 77 14,42 210 39,33 37 6,93 64 11,99 146 27,34 534 133 24,91 Total 495.966 30,70 450.559 27,89 262.027 16,22 133.108 8,24 273.662 16,94 1.615.322 45.407 2,81
See also 2025 Argentine provincial elections 2025 Argentine legislative election 2025 Buenos Aires provincial election
References