Composition
By province
Province
Deputies
Population (2010)
Buenos Aires 70
15,625,084
Buenos Aires City 25
2,890,151
Catamarca 5
367,828
Chaco 7
1,053,466
Chubut 5
506,668
Córdoba 18
3,304,825
Corrientes 7
993,338
Entre Ríos 9
1,236,300
Formosa 5
527,895
Jujuy 6
672,260
La Pampa 5
316,940
La Rioja 5
331,847
Mendoza 10
1,741,610
Misiones 7
1,097,829
Neuquén 5
550,334
Río Negro 5
633,374
Salta 7
1,215,207
San Juan 6
680,427
San Luis 5
431,588
Santa Cruz 5
272,524
Santa Fe 19
3,200,736
Santiago del Estero 7
896,461
Tierra del Fuego 5
126,190
Tucumán 9
1,448,200
By political groups
Composition of the Chamber by political groups. 127 of the current members of the Chamber of Deputies for the 2025-2027 period were elected in 2025 , while the remaining 130 were elected in 2023 . The governing party La Libertad Avanza , to which President Javier Milei belongs, is the largest parliamentary bloc , with 95 deputies, while the main opposition, Union for the Homeland , holds 93 deputies.
Election cycles
Election
Term
Start
End
2023 10 December 2023
10 December 2027
2025 10 December 2025
10 December 2029
List of deputies
The table is sorted by provinces in alphabetical order, and then with their deputies in alphabetical order by their surnames. All deputies start their term on December 10, and end it on December 9 of the corresponding years, except when noted.
Notes
↑ Since 10 December 2025, replacing Silvia Lospennato , who resigned on 9 December to take office as a member of the Buenos Aires City Legislature. ↑ Since 10 December 2025, replacing Christian Castillo , who resigned under a rotation agreement of the Workers' Left Front . ↑ Since 10 December 2025, replacing Itai Hagman , who resigned to assume a 2025–2029 term as national deputy. ↑ Since 31 January 2024, replacing Diana Mondino , who resigned as deputy-elect to become Minister of Foreign Affairs. ↑ Since 14 August 2024, replacing Alfredo Vallejos, who resigned on 15 July to become Minister of Security of Corrientes Province. ↑ Since 17 December 2025. ↑ Since 24 June 2026, replacing Adrián Ravier, who resigned to become Presidential Spokesperson of Argentina. ↑ Since 10 December 2025, replacing Nadia Márquez , who resigned to become a national senator. ↑ Since 10 December 2025, replacing Martín Soria , who resigned on 9 December to become a national senator. ↑ Since 10 December 2025, replacing Emilia Orozco , who resigned to become a national senator. ↑ Since 31 January 2024. ↑ Since 10 December 2025, replacing Carlos D'Alessandro, who resigned to become a provincial deputy in San Luis.
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La Rioja
Buenos Aires
Mendoza