2017 Chilean general election

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.

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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) 7.04pp
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 Leader % Seats ± Chile Vamos 38.68 72 Force of the Majority 24.06 43 Broad Front 16.49 20 [[Democratic Convergence|Democratic Convergence]] 10.68 14 All Over Chile 3.92 1 Green Regionalist 1.92 4 Independents 1.75 1 This lists parties that won seats. See the complete results below.
Results by constituency

In the presidential election, former president Sebastián Piñera won 36% of the vote, almost 14 points ahead of senator Alejandro Guillier. In the runoff election on 17 December 2017, Piñera surprised many by beating Guillier with 54% of the vote.

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 grew to 50 following the election in 2021.^[1]