The closing of the lists suffered setbacks, such as two power outages in the city of La Plata, which forced the deadline to be extended until Monday for some groups.

Thus, the candidates who will compete for seats in the provincial legislature were defined.

This is how the candidate lists of the main parties turned out 

Peronism, under the banner of Fuerza Patria, extended the confirmation process until the early hours of Sunday. At approximately 3:00 a.m., the first candidates were announced: Gabriel Katopodis, current Minister of Infrastructure and Public Services of the Buenos Aires Province, will head the list of senators for the First Electoral Section. Verónica Magario, Vice Governor of the Buenos Aires Province, positioned herself at the top of the list of deputies for the Third Electoral Section.

On the Fuerza Patria list of candidates for deputies, Diego Nanni was appointed to the 2nd Section, Alejandro Di Chiara to the 6th Section, and Ariel Archanco to the 8th Section. In the senatorial category, Diego Videla was elected to the 4th Section, Fernanda Raverta to the 5th Section, and María Inés Laurini to the 7th Section.

The La Libertad Avanza Alliance, which includes La Libertad Avanza and the PRO party, has announced its top congressional candidates. Natalia Blanco represents the 2nd Section, Maximiliano Bondarenko the 3rd Section, Oscar Liberman the 6th Section, and Juan Osaba the 8th Section.

For the Senate, Diego Valenzuela headed the 1st Section, Gonzalo Cabezas the 4th Section, Guillermo Montenegro the 5th Section, and Alejandro Speroni the 7th Section.

The Somos Buenos Aires front, formed by an agreement between the UCR, Hacemos, Peronist sectors, the Civic Coalition ARI and GEN, presented its top congressional candidates: Pablo Domenichini (3rd Section), Andrés De Leo (6th Section) and Pablo Nicoletti (8th Section).

For the Senate, the lists were headed by Julio Zamora (1st Section), Pablo Petrecca (4th Section), Matías Balsamello (5th Section) and Fernando Martini (7th Section).

The Left and Workers' Front – Unity (FIT-U) has officially announced its lists, with representatives such as Romina del Pla and Nicolás del Caño. The top candidates for the House of Representatives are Jorge Núñez (Section 2), Nicolás del Caño (Section 3), Héctor Carlos Zaris (Section 6), and Laura Cano (Section 8).

In the senators category, the lists were led by Romina del Pla (1st Section), Luciano Roggero (4th Section), Alejandro Martínez (5th Section) and Daniel Marín (7th Section).

Other fronts presented their candidates

The New MAS also presented its lists. Florencia González (Section 2), Juan Cruz Ramat (Section 3), Paula Abal (Section 6), and Facundo Díaz (Section 8) are the leading candidates for deputies. In the Senate, the top spots are Lucas Correa (Section 1), Emilio Almada (Section 4), Marcos Pascuan (Section 5), and Sofía Carneiro (Section 7).

The Potencia Front appointed Ariel Bianchi (Section 2), Santiago Mac Goey (Section 3), Héctor Carlos Zaris (Section 6), and Jorge Metz (Section 8) as deputies. In the Senate, its leaders were Felix Lonigro (Section 1), Andrea Passerini (Section 4), Fabio Adrián Molinero (Section 5), and Pedro Vigneau (Section 7).

Thus, the Liberal Union Alliance announced its first names. Luciano Busso (Section 2), Alejandro Mansilla (Section 3), José Luis Giannasi (Section 6), and Diana Zonaro (Section 8) were nominated for deputies. For senators, the lists were headed by Eduardo Bisognin (Section 1), Carlos Dalfonso (Section 4), Horacio Rivara (Section 5), and Eduardo Rocha (Section 7).

Demographic weight of the electoral sections

These Buenos Aires elections will be held atypically, as they are separate from the national legislative elections for the first time. According to provisional electoral roll data, the First Electoral Section has gained significant demographic weight, with 4,732,831 eligible voters. This number surpasses the Third Section, which has 4,637,863 voters and has historically been a Peronist stronghold.

This reconfiguration of the electorate oriented campaign strategies toward the 24 districts that make up the northern and western metropolitan areas. Among them, municipalities such as Campana, Escobar, General San Martín, Hurlingham, Ituzaingó, José C. Paz, and Tigre stand out, and could influence the final election count.