Argentine Chamber of Deputies

Current composition

It has 257 seats and one-half of the members are elected every two years to serve four-year terms by the people of each district (23 provinces and the Autonomous City of Buenos Aires) using proportional representation (list PR), D'Hondt formula with a 3% of the district registered voters threshold, and the following distribution:

By province

By political groups

Main article: List of current Argentine deputies

127 of the current members of the Chamber of Deputies for the 2025-2027 period were elected in the 2025, while the remaining 130 were elected in 2023 legislative election. The governing party La Libertad Avanza, to which President Javier Milei belongs, is the largest parliamentary bloc with 95 deputies, while the main opposition, Homeland Force, holds 93 deputies.

Requirements

Individuals elected to congress must be at least twenty five years old with at least four years of active citizenship. The elected individuals have to have been naturalized in the province in which they are being elected, or have at least two years of immediate residency in said province. (Art. 48 of the Argentine Constitution).

History

The Chamber of Deputies was provided for in the Constitution of Argentina, ratified on May 1, 1853. Eligibility requisites are that members be at least twenty-five years old, and have been a resident of the province they represent for at least two years; as congressional seats are elected at-large, members nominally represent their province, rather than a district.

Otherwise patterned after Article One of the United States Constitution per legal scholar Juan Bautista Alberdi's treatise, Bases de la Constitución Argentina, the chamber was originally apportioned in one seat per 33,000 inhabitants. The constitution made no provision for a national census, however, and because the Argentine population doubled every twenty years from 1870 to 1930 as a result of immigration (disproportionately benefiting Buenos Aires and the Pampas area provinces), censuses were conducted generationally, rather than every decade, until 1947.

Apportionment controversy

The distribution of the Chamber of Deputies is regulated since 1982 by Law 22.847, also called Ley Bignone, enacted by the last Argentine dictator, General Reynaldo Bignone, ahead of the 1983 general elections. This law established that, initially, each province shall have one deputy per 161,000 inhabitants, with standard rounding; after this is calculated, each province is granted three more deputies. If a province has fewer than five deputies, the number of deputies for that province is increased to reach that minimum.

Controversially, apportionment remains based on the 1980 population census, and has not been modified since 1983; national censuses since then have been conducted in 1991, 2001, 2010, and 2022. The minimum of five seat per province allots the smaller ones a disproportionately large representation, as well. Accordingly, this distribution does not reflect Argentina's current population balance.

Presidents of the Chamber

The president of the Chamber is elected by a majority of the Chamber's members. Traditionally, the presidency is held by a member of the party or alliance of the national executive, though exceptions have occurred, such as in 2001, when the Peronist Eduardo Camaño was elected president of the Chamber during the presidency of the radical Fernando de la Rúa. The officeholders for this post since 1983 have been:

Current authorities

Current leadership positions include:

References

References

1. (24 January 2024). "Jaldo pidió no acompañar el rechazo del peronismo a la ley de Milei y se retobó Yedlin". La Política Online.
2. "Honorable Senado de la Nación: Constitución Nacional".
3. [http://www.indec.gov.ar/censo2010/historia-censos.pdf Indec: Historia de los censos] {{Webarchive. link. (2016-05-09 {{in lang). es
4. Reynoso, Diego Esteban. (June 2012). "El reparto de la representación. Antecedentes y distorsiones de la asignación de diputados a las provincias". Postdata.
5. Domínguez, Juan José. (14 October 2021). "Santoro dijo que la propuesta de Vidal de exigir "la Presidencia de la Cámara de Diputados no había ocurrido nunca"". Chequeado.