Seongsan, Changwon (constituency)
# Seongsan, Changwon (constituency)

Seongsan, Changwon (Korean: 창원시 성산구) is a constituency of the National Assembly of South Korea. The constituency consists of Seongsan, Changwon, South Gyeongsang Province. As of 2019, 183,934 eligible voters were registered in the constituency.

## List of members of the National Assembly

| Election | Member | Party | Dates | Notes |
| - | - | - | - | - |
| 2012 | Kang Gi-yun | Saenuri | 2012–2016 | |
| 2016 | Roh Hoe-chan | Justice | 2016–2018 | Leader of the New Progressive Party (2008–2010); Floor leader of the Justice Party (2016–2018) |
| 2019 | Yeo Yeong-gug | Justice | 2019–2020 | |
| 2020 | Kang Gi-yun | People Power | 2020–present | |

## Election results

### 2019 (by-election)

By-election 2019: Seongsan, Changwon :

| Party | Party | Candidate | Votes | % | ±% |
| - | - | - | - | - | - |
| | Justice | Yeo Yeong-gug | 42,663 | 45.8 | -5.7 |
| | Liberty Korea | Kang Gi-yun | 42,159 | 45.2 | +5.0 |
| | Minjung | Son Seok-hyung | 3,540 | 3.8 | new |
| | Bareunmirae | Lee Jae-hwan | 3,334 | 3.6 | -4.7 |
| | Patriots' | Jin Soon-jung | 838 | 0.9 | new |
| | Independent | Kim Jong-seo | 706 | 0.8 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 873 | – | |
| Turnout | Turnout | Turnout | 94,113 | 51.2 | -14.9 |
| Registered electors | Registered electors | Registered electors | 183,934 | | |
| | Justice hold | Justice hold | Swing | | |

### 2016

Legislative Election 2016: Seongsan, Changwon :

| Party | Party | Candidate | Votes | % | ±% |
| - | - | - | - | - | - |
| | Justice | Roh Hoe-chan | 61,897 | 51.5 | new |
| | Saenuri | Kang Gi-yun | 48,336 | 40.2 | -8.8 |
| | People's Party (South Korea, 2016) | Lee Jae-hwan | 9,949 | 8.3 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,592 | – | – |
| Turnout | Turnout | Turnout | 121,774 | 66.1 | +7.8 |
| Registered electors | Registered electors | Registered electors | 184,105 | | |
| | Justice gain from Saenuri | Justice gain from Saenuri | Swing | | |

### 2012

Legislative Election 2012: Seongsan, Changwon :

| Party | Party | Candidate | Votes | % | ±% |
| - | - | - | - | - | - |
| | Saenuri | Kang Gi-yun | 52,502 | 49.0 | new |
| | Unified Progressive | Son Seok-hyung | 46,924 | 43.8 | new |
| | New Progressive | Kim Chang-geun | 7,630 | 7.2 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 865 | – | – |
| Turnout | Turnout | Turnout | 107,921 | 58.3 | |
| Registered electors | Registered electors | Registered electors | 185,166 | | |
| | Saenuri win (new seat) | Saenuri win (new seat) | Saenuri win (new seat) | Saenuri win (new seat) | Saenuri win (new seat) |
