Legislative elections were held in

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

on 22 October 2017 to elect half of the Chamber of Deputies and one third of the Senate. The result was a victory for the ruling

Cambiemos ( en, Together for Change) is a centre-right political coalition in Argentina. It was created in 2015 as Cambiemos ( en, Let's Change), and renamed in 2019. It is composed of Republican Proposal, Radical Civic Union, Civic Coalition ARI and U ...

alliance, being the most voted force in 13 of the 24 districts.

Background

The elections took place during the presidency of

Mauricio Macri Mauricio Macri (; born 8 February 1959) is an Argentine businessman and politician who served as the President of Argentina from 2015 to 2019. He has been the leader of the Republican Proposal (PRO) party since its founding in 2005. He previo ...

whose ''

'' coalition also governed the

City of Buenos Aires Buenos Aires ( or ; ), officially the Autonomous City of Buenos Aires ( es, link=no, Ciudad Autónoma de Buenos Aires), is the capital and primate city of Argentina. The city is located on the western shore of the Río de la Plata, on South Am ...

and Buenos Aires Province. As Cambiemos was a new coalition with few noteworthy political figures, several members of the cabinet were asked to resign from their positions and run for

Congress A congress is a formal meeting of the representatives of different countries, constituent states, organizations, trade unions, political parties, or other groups. The term originated in Late Middle English to denote an encounter (meeting of ...

in their respective districts instead. Peronist factions were divided in two main groups; the

Citizen's Unity Citizen's Unity ( es, Unidad Ciudadana) was a centre-left Kirchnerist political coalition in Argentina for the 2017 legislative elections led by the former President Cristina Fernández de Kirchner. This coalition existed in the provinces of B ...

, led by the former president

Cristina Kirchner Cristina is a female given name, and it is also a surname. Notable people with the name include: Given name *Cristina (daughter of Edward the Exile), 11th-century English princess *Cristina (singer), Cristina Monet-Palaci (1956–2020), American s ...

, led the parliamentary opposition to Macri's administration. Another group was composed of politicians from the Justicialist Party and the

Renewal Front The Renewal Front ( es, Frente Renovador, FR) is a Peronist political party in Argentina led by Sergio Massa, who is part of the Frente de Todos. Massa is a Peronist and said he wants to "build the Peronism of the 21st century." History It was ...

Electoral system

Chamber of Deputies

The 257 members of the Chamber of Deputies are elected by proportional representation in 24 multi-member constituencies based on the

provinces A province is almost always an administrative division within a country or state. The term derives from the ancient Roman '' provincia'', which was the major territorial and administrative unit of the Roman Empire's territorial possessions ou ...

(plus the

). Seats are allocated using the

d'Hondt method The D'Hondt method, also called the Jefferson method or the greatest divisors method, is a method for allocating seats in parliaments among federal states, or in party-list proportional representation systems. It belongs to the class of highest ...

with a 3% electoral threshold. In this election, 127 of the 257 seats are up for renewal for a four-year term.

Senate

The 72 members of the Senate are elected in the same 24 constituencies, with three seats in each. The party receiving the most votes in each constituency wins two seats, with the third seat awarded to the second-placed party.Electoral system
Inter-Parliamentary Union The 2017 elections will see one-third of Senators renewed, with eight provinces electing three Senators; Buenos Aires, Formosa, Jujuy, La Rioja, Misiones, San Juan, San Luis and Santa Cruz.

Schedule

The timetable for the different national electoral acts was established on the following dates: * 25 April: Closure of the provisional

electoral register An electoral roll (variously called an electoral register, voters roll, poll book or other description) is a compilation that lists persons who are entitled to vote for particular elections in a particular jurisdiction. The list is usually broke ...

. * 5 May: Publication of the provisional electoral register. * 20 May: Deadline to correct the electoral register. * 14 June: Deadline to register the alliances. * 24 June: Deadline to register the pre-nominations for the primary elections (PASO). * 14 July: Beginning of the electoral campaign for the PASO and publication of the definitive electoral register. * 21 July: Beginning of the prohibition of the broadcast of advertisements to capture the vote. * 29 July: Beginning of the prohibition of public acts (inaugurations, announcements) by the government until the PASO. * 11 August: Beginning of the

election silence Election silence, blackout period, pre-election silence, electoral silence, or campaign silence is a ban on political campaigning or media coverage of a general election, before or during that election. Operation In some jurisdictions, such as S ...

. * 13 August: Primary elections (PASO). * 17 September: Start of the election campaign for the national elections. * 27 September: Beginning of the prohibition to broadcast advertising to capture the vote. * 7 October: Beginning of the prohibition of public acts (inaugurations, announcements) by the government, until the elections. * 14 October: Beginning of the prohibition to publish opinion polls. * 20 October: Beginning of the election silence. * 22 October: National legislative elections.

Results

Chamber of Deputies

Results by province

Senate

Results by province

References

{{Mauricio Macri

2017 File:2017 Events Collage V2.png, From top left, clockwise: The War Against ISIS at the Battle of Mosul (2016-2017); aftermath of the Manchester Arena bombing; The Solar eclipse of August 21, 2017 ("Great American Eclipse"); North Korea tests a s ...

October 2017 events in South America Presidency of Mauricio Macri