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.

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.

## Infobox (legislative election)

- **embed**: yes
- **election name**: Senate
- **noleader**: yes
- **seats for election**: 23 of the 43 seats in the Senate of Chile, Senate
- **party1**: Chile Vamos
- **last election1**: 7
- **seats1**: 12
- **percentage1**: 37.71
- **party2**: New Majority (Chile), Force of the Majority
- **colour2**: #FC4143
- **last election2**: 4
- **seats2**: 7
- **percentage2**: 22.82
- **party3 link**: no
- **colour3**: #1E90FF
- **last election3**: 4
- **seats3**: 3
- **percentage3**: 14.32
- **party4**: Broad Front (Chilean political coalition), Broad Front
- **colour4**: lightgreen
- **last election4**: 0
- **seats4**: 1
- **percentage4**: 11.06
- **map**:
- **map caption**: Results by constituency


## Infobox (legislative election)

- **embed**: yes
- **election name**: Chamber of Deputies
- **seats for election**: All 155 seats in the Chamber of Deputies of Chile, Chamber of Deputies
- **majority seats**: 78
- **noleader**: yes
- **party1**: Chile Vamos
- **last election1**: 49
- **seats1**: 72
- **percentage1**: 38.68
- **party2**: New Majority (Chile), Force of the Majority
- **colour2**: #FC4143
- **last election2**: 44
- **seats2**: 43
- **percentage2**: 24.06
- **party3**: Broad Front (Chilean political coalition), Broad Front
- **colour3**: lightgreen
- **last election3**: 3
- **seats3**: 20
- **percentage3**: 16.49
- **party4 link**: no
- **colour4**: #1E90FF
- **last election4**: 23
- **seats4**: 14
- **percentage4**: 10.68
- **party5**: All Over Chile
- **colour5**: #c11469
- **last election5**: 0
- **seats5**: 1
- **percentage5**: 3.92
- **party6**: Green Regionalist
- **colour6**: #008066
- **last election6**: 1
- **seats6**: 4
- **percentage6**: 1.92
- **party7**: Independents
- **last election7**: 3
- **seats7**: 1
- **percentage7**: 1.75
- **map**:
- **map caption**: Results by constituency


## Infobox (election)

- **embed**: yes
- **election name**: Presidential election
- **type**: presidential
- **election date**: 19 November 2017 (first round)

- **turnout**: 46.72% (first round)  2.63percentage point, pp
49.02% (second round)  7.04percentage point, pp
- **image1**:
- **candidate1**: **Sebastián Piñera**
- **party1**: Independent politician, Independent
- **alliance1**: Chile Vamos
- **colour1**: 065DA8
- **popular vote1**: **3,796,918**
- **percentage1**: **54.57%**
- **image2**:
- **candidate2**: Alejandro Guillier
- **party2**: Independent politician, Independent
- **alliance2**: New Majority (Chile), Force of the Majority
- **colour2**: FC4143
- **popular vote2**: 3,160,628
- **percentage2**: 45.43%
- **title**: President
- **before election**: Michelle Bachelet
- **before party**: Socialist Party of Chile
- **after election**: Sebastián Piñera
- **after party**: Independent politician, Independent


## Infobox (election)

- **country**: Chile
- **previous election**: 2013 Chilean general election
- **previous year**: 2013
- **next election**: 2021 Chilean general election
- **next year**: 2021