Election results

Data on parliamentary elections, including the background, candidates, voter turnout, results and the formation of the new legislature. By default the latest election results are displayed. Select a date to view results from previous elections


Election date(s) The date when elections started and ended for directly or indirectly elected parliaments/chambers. The date of appointments for appointed parliaments/chambers.
Timing of election Timing of election: Upon normal expiry; Early elections; Delayed elections
Upon normal expiry
Expected date of next elections The expected date at which the next elections should take place, based on law or practice.
Number of seats at stake Number of seats contested at the elections. Where the parliament/chamber is fully renewed, this number is usually identical to the statutory number of members. Where the parliament/chamber is partially renewed or appointed, the number of seats at stake is usually less than the total number of members.
Scope of elections Scope of elections: Full renewal; Partial renewal.
Partial renewal


Total number of candidates Total number of people who registered as candidates for election. Does not include people who stood as candidates to become "substitute members".
Number of male candidates Number of male candidates
Number of female candidates Number of female candidates
Percentage of women candidates The percentage is calculated by dividing the number of women candidates by the total number of candidates.


About the election Short description of the context and results of the election.
No coalition won an outright majority in the 155-member Chamber of Deputies and the 50-member Senate (see note 1). The Let's Go Chile (Chile Vamos) coalition, led by former President Sebastián Piñera, who held office from 2010 to 2014, became the largest force in both chambers. The Force of the Majority, led by former TV news anchor Senator Alejandro Guillier, came second in both chambers while the Broad Front (Frente Amplio), led by Ms. Beatriz Sánchez came third in the Chamber of Deputies. The percentage of women has increased in both chambers due the gender quota for candidates introduced in the 2015 electoral law (see note 2): 26.09% of the senators elected in 2017 were women (up from 20% in 2013) and 22.58% for the Chamber of Deputies (up from 15.83% in 2013).

During the election campaign, the major parties focused on the economy, tax, labour and education reforms. The Let's Go Chile leader promised to revive economic growth by lowering the corporate tax rate and scaling back the tax, labour and education reforms implemented by outgoing President Michelle Bachelet, who was constitutionally unable to seek re-election. On the contrary, the Force of the Majority leader promised to continue and deepen the reforms.

Parliamentary elections were held in parallel with the first round of the presidential elections. On 17 December, former President Piñera defeated Force of the Majority leader Guillier in the second round of elections.

Note 1:
In accordance with Act No. 20.840, the statutory number of members of the Chamber of Deputies increased from 120 to 155 and that of the Senate from 38 to 50. However, the Senate will comprise 43 members until 2022. 23 senators were elected in 2017, in addition to the 20 elected in 2013. 27 Senators will be elected in 2021, to make the Senate a 50-member body.

Note 2:
Under the 2015 electoral law, neither male nor female candidates may exceed 60% of the candidates in the list of party or coalition. The law also introduced the proportional representation system instead of the majority system. The previous binominal system granted one of the two seats in each district to the losing coalition as long as it gets at least a third of the votes.
Percentage of seats won by largest party or coalition The percentage is calculated by dividing the number of seats won by the largest party by the number of seats at stake in the election.
Alternation of power after elections The results of the elections caused a change in the government. "Not applicable" to countries using the presidential system when parliamentary and presidential elections are held separately, to countries in political transition or where there is no party system.
Number of parties in government The government may be formed by one or more political parties
Names of parties in government The government may be formed by one or more political parties
National Renovation Party (RN), Independent Democratic Union (UDI) and Political Evolution Party (EVOPOLI)
Parties or coalitions winning seats
Political groups winning seats breakdown
Political group Total 2017
National Renovation Party (RN) 8 6
Independent Democratic Union (UDI) 9 4
Political Evolution Party (EVOPOLI) 2 2
Socialist Party (PS) 7 3
Party for Democracy (PPD) 11 6
Democratic Revolution (RD) 1 1
Progressive Country 1 0
Independents 4 1
Members elected, by sex
Number of men elected
Number of women elected
Percentage of women elected The percentage is calculated by dividing the number of women elected in the election and the number of seats at stake at the election.
Note on the Distribution of seats according to sex
Six of the 23 Senators elected in 2017 were women. As at 14 March 2018, there were ten women out of the total 43 senators
Other notes
- The Let's Go Chile (Chile Vamos) coalition comprised the National Renovation Party (RN), the Independent Democratic Union (UDI) and the Political Evolution Party (EVOPOLI).
- The Force of the Majority (La Fuerza de la Mayoria) coalition comprised the Socialist Party (PS), the Party for Democracy (PPD), the Communist Party (PC) and the Radical Social-Democratic Party (PRSD).
- The Broad Front (Frente Amplio) coalition comprised the Democratic Revolution (RD), the Humanist Party (PH), the Green Ecologist Party (PEV), the Equality Party (IGUALDAD), the Liberal Party (PL) and Citizen Power (PODER).
- The Democratic Convergence (Convergencia Democratica) coalition comprised the Christian Democratic Party (DC) and the Citizen Left Party.
- The Green Regionalist Coalition (Coalicion Regionalista Verde) included the Social Green Regionalist Federation (FRVS).
- The For All Chile (Por Todo Chile) coalition included the Progressive Party (PRO).
Senate (14.03.2018)
Women Directly Elected

New legislature

Total number of men after the election The total number of male parliamentarians in this parliament/chamber following the election or renewal, regardless of their modes of designation.
Total number of women after the election The total number of female parliamentarians in this parliament/chamber following the election or renewal, regardless of their modes of designation.
Date of the first session The date when the newly elected parliament/chamber was convened for the first time. It may be different from the date when members were sworn in.
First Speaker of the new legislature
First Speaker of the new legislature First name of the Speaker of the new legislature following the election or renewal.
Carlos Montes Cisternas (Male)
Political party
Socialist Party
Date of election