2017 Chilean general election

2017 Chilean general election

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Presidential election
19 November 2017 (first round) 17 December 2017 (second round)
Turnout	46.72% (first round) 2.63pp 49.02% (second round) 2.30pp
Candidate Sebastián Piñera Alejandro Guillier Party Independent Independent Alliance Chile Vamos Force of the Majority Popular vote 3,796,918 3,160,628 Percentage 54.57% 45.43%
First round results by commune Second Round results by commune
President before election Michelle Bachelet Socialist Elected President Sebastián Piñera Independent
Chamber of Deputies
All 155 seats in the Chamber of Deputies 78 seats needed for a majority
Party Vote % Seats +/– Chile Vamos 38.68 72 +23 Force of the Majority 24.06 43 −1 Broad Front 16.49 20 +17 Democratic Convergence 10.68 14 −9 All Over Chile 3.92 1 +1 Green Regionalist 1.92 4 +3 Independents 1.75 1 −2 This lists parties that won seats. See the complete results below. Results by constituency
Senate
23 of the 43 seats in the Senate
Party Vote % Seats +/– Chile Vamos 37.71 12 +5 Force of the Majority 22.82 7 +3 Democratic Convergence 14.32 3 −1 Broad Front 11.06 1 +1 This lists parties that won seats. See the complete results below. Results by constituency

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General elections were held in Chile on 19 November 2017 to elect the president, all 155 members of the Chamber of Deputies, 23 of the 43 members of the Senate and 278 members of regional boards. All elected members would serve a four-year term, aside from the senators would serve for eight years.

In the presidential election, former president Sebastián Piñera received a lower-than-expected 36% of the vote, nearly 14 points ahead of senator Alejandro Guillier, who was backed by the sitting administration. In the runoff election on 17 December 2017, Piñera surprised many by defeating Guillier with 54% of the vote, and turnout was two points higher than in the first round.

In the parliamentary elections, the Chile Vamos coalition, which supported Piñera's candidacy, won 46% of the Chamber of Deputies and 44% of the Senate, while the governing New Majority alliance, which competed without the Christian Democrats for the first time in 28 years, failed to retain its majority in both chambers, receiving just 28% and 35% in the lower and upper chambers, respectively. The leftist bloc Broad Front elected 20 deputies (13%) and gained one senator. The Christian Democratic Party received 9% of the lower chamber and secured 14% of the Senate.

Following an election reform in 2015, the Chamber of Deputies grew in size to 155 members from the previous 120, while the Senate increased its membership from 38 to 43 after this election, and will grow to 50 following the election in 2021.^[1] Multi-seat constituencies were reestablished, replacing the previous binomial system of two seats per district, installed by the outgoing Pinochet dictatorship in 1989.^[2][3] Starting with this election, Chile's congress was elected through open list proportional representation under the D'Hondt method. Also for the first time, a 40% gender quota was put in place for candidates of each political party in parliamentary elections.^[4]

All the newly elected officials began their terms on 11 March 2018.

This was the first non-primary election in which Chilean citizens voted from abroad.^[5]