# Results of the 2020 South Korean legislative election

Legislative elections were held in South Korea on 15 April 2020. All 300 members of the National Assembly were elected, 253 from first-past-the-post constituencies and 47 from proportional party lists.

## By single-member constituency
### Seoul
#### Jongno

Jongno :
| Party | Party | Candidate | Votes | % |
| | Democratic | Lee Nak-yon | 54,902 | 58.38 |
| | United Future | Hwang Kyo-ahn | 37,594 | 39.97 |
| | Our Republican | Han Min-ho | 417 | 0.44 |
| | Minjung | Oh In-hwan | 276 | 0.29 |
| | Independent | Kim Yong-deok | 260 | 0.27 |
| | NRDP | Park Jun-yeong | 194 | 0.20 |
| | Peace and Human Rights | Lee Jeong-hui | 139 | 0.14 |
| | Hannara | Kim Hyeong-suk | 71 | 0.07 |
| | New Politics | Paik Byeong-chan | 65 | 0.06 |
| | People's Democratic | Park So-hyeon | 63 | 0.06 |
| | Republican | Kim Han-wool | 57 | 0.06 |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,201 | – |
| Turnout | Turnout | Turnout | 95,239 | 70.8 |
| Registered electors | Registered electors | Registered electors | 134,516 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Jung-Seongdong A

Jung–Seongdong A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Hong Ihk-pyo | 70,387 | 54.3 | +9.2 |
| | United Future | Jin Soo-hee | 53,107 | 41.0 | +1.6 |
| | Justice | Jeong Hye-yeon | 5,465 | 4.2 | +2.1 |
| | National Revolutionary Dividends | Lee Jeong-seop | 786 | 0.6 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,455 | – | – |
| Turnout | Turnout | Turnout | 131,200 | 68.3 | +9.5 |
| Registered electors | Registered electors | Registered electors | 192,161 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Jung-Seongdong B

Jung–Seongdong B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Park Sung-joon | 64,071 | 52.0 | +27.7 |
| | United Future | Ji Sang-wook | 58,300 | 47.3 | +9.3 |
| | National Revolutionary Dividends | Lee Ju-yang | 937 | 0.8 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,392 | – | – |
| Turnout | Turnout | Turnout | 124,700 | 67.9 | +9.4 |
| Registered electors | Registered electors | Registered electors | 183,779 | | |
| | Democratic gain from United Future | Democratic gain from United Future | Swing | | |

#### Yongsan

Yongsan :
| Party | Party | Candidate | Votes | % | ±% |
| | United Future | Kwon Yeong-se | 63,891 | 47.8 | +7.9 |
| | Democratic | Kang Tae-woong | 63,001 | 47.1 | +4.3 |
| | Justice | Jeong Youn-wook | 4,251 | 3.1 | +0.3 |
| | Minsaeng | Kwon Hyeok-moon | 1,311 | 1.0 | new |
| | Minjung | Kim Eun-hee | 648 | 0.5 | −0.2 |
| | National Revolutionary Dividends | Kim Hee-jeon | 541 | 0.4 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,400 | – | – |
| Turnout | Turnout | Turnout | 135,043 | 66.5 | +8.8 |
| Registered electors | Registered electors | Registered electors | 203,233 | | |
| | United Future gain from Democratic | United Future gain from Democratic | Swing | | |

#### Gwangjin A

Gwangjin A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Jeon Hye-sook | 56,608 | 53.7 | +13.0 |
| | United Future | Kim Byeong-min | 42,822 | 40.6 | +2.7 |
| | Justice | Oh Bong-seok | 3,690 | 3.5 | new |
| | Minsaeng | Lim Dong-sun | 1,842 | 1.7 | −18.2 |
| | National Revolutionary Dividends | Lee Seung-wook | 492 | 0.5 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,052 | – | – |
| Turnout | Turnout | Turnout | 106,506 | 68.0 | +9.5 |
| Registered electors | Registered electors | Registered electors | 156,559 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Gwangjin B

Gwangjin B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Ko Min-jung | 54,210 | 50.4 | +1.9 |
| | United Future | Oh Se-hoon | 51,464 | 47.8 | +10.6 |
| | National Revolutionary Dividends | Heo Jeong-yeon | 370 | 0.3 | new |
| | Mirae | Oh Tae-yang | 1,574 | 1.5 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 958 | – | – |
| Turnout | Turnout | Turnout | 108,576 | 71.2 | +11.4 |
| Registered electors | Registered electors | Registered electors | 152,526 | | |
| | Democratic hold | Democratic hold | Swing | | |

#### Dongdaemun A

Dongdaemun A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Ahn Gyu-back | 51,551 | 52.7 | +9.9 |
| | United Future | Heo Yong-beom | 40,874 | 41.8 | +3.5 |
| | Independent | Lee Ga-hyeon | 2,009 | 2.1 | new |
| | Minsaeng | Baek Geum-san | 1,679 | 1.7 | new |
| | Minjung | Oh Jun-seok | 1,264 | 1.3 | new |
| | National Revolutionary Dividends | Jeong Gong-myeong | 393 | 0.4 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,257 | – | – |
| Turnout | Turnout | Turnout | 99,027 | 66.5 | +7.8 |
| Registered electors | Registered electors | Registered electors | 148,942 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Dongdaemun B

Dongdaemun B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Jang Gyeong-tae | 55,230 | 54.5 | −3.7 |
| | United Future | Lee Hye-hoon | 44,360 | 43.8 | +5.6 |
| | Minjung | Kim Jong-min | 1,198 | 1.2 | new |
| | National Revolutionary Dividends | Park Gyeong-hui | 464 | 0.5 | new |
| | Independent | Min Byung-doo | Resignation | – | – |
| Rejected ballots | Rejected ballots | Rejected ballots | 3,216 | – | – |
| Turnout | Turnout | Turnout | 104,468 | 66.6 | +7.6 |
| Registered electors | Registered electors | Registered electors | 156,971 | | |
| | Democratic hold | Democratic hold | Swing | | |

#### Jungnang A

Jungnang A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Seo Young-kyo | 55,185 | 55.8 | +3.6 |
| | United Future | Kim Sam-hwa | 34,670 | 36.3 | +4.8 |
| | Justice Party | Kim Ji-soo | 2,706 | 2.8 | new |
| | Independent | Lee Seong-bok | 1,105 | 1.2 | new |
| | Minsaeng Party | Lee Ki-hyun | 754 | 0.8 | new |
| | Minjung Party | Choi Seo-hyeon | 624 | 0.7 | −0.2 |
| | National Revolutionary Dividends | Lee Ju-yang | 492 | 0.5 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,145 | – | – |
| Turnout | Turnout | Turnout | 96,685 | 61.0 | +7.6 |
| Registered electors | Registered electors | Registered electors | 158,409 | | |
| | Democratic hold | Democratic hold | Swing | | |

#### Jungnang B

Jungnang B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Park Hong-keun | 74,131 | 59.3 | +15.0 |
| | United Future | Yoon Sang-il | 47,603 | 38.1 | +1.4 |
| | Minjung Party | Lee So-young | 1,956 | 1.6 | new |
| | National Revolutionary Dividends | Shin Hwang-woo | 722 | 0.6 | new |
| | Korean Welfare Party | Min Jeong-gi | 625 | 0.5 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,362 | – | – |
| Turnout | Turnout | Turnout | 126,399 | 65.7 | +6.8 |
| Registered electors | Registered electors | Registered electors | 192,460 | | |
| | Democratic hold | Democratic hold | Swing | | |

#### Seongbuk A

Seongbuk A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Kim Young-bae | 82,954 | 60.9 | +13.0 |
| | United Future | Han Sang-hak | 49,727 | 36.5 | +0.3 |
| | Minsaeng Party | Park Chun-rim | 2,642 | 1.9 | new |
| | National Revolutionary Dividends | Choi Won-yong | 880 | 0.6 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,983 | – | – |
| Turnout | Turnout | Turnout | 136,203 | 68.3 | +7.7 |
| Registered electors | Registered electors | Registered electors | 202,294 | | |
| | Democratic hold | Democratic hold | Swing | | |

#### Seongbuk B

Seongbuk B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Ki Dong-min | 70,740 | 59.4 | +15.0 |
| | United Future | Chung Tae-keun | 45,543 | 38.2 | +1.4 |
| | Minjung Party | Pyon Jae-seung | 2,060 | 1.7 | new |
| | National Revolutionary Dividends | Lim Kyung-ho | 829 | 0.7 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,434 | – | – |
| Turnout | Turnout | Turnout | 119,172 | 66.7 | +9.2 |
| Registered electors | Registered electors | Registered electors | 180,743 | | |
| | Democratic hold | Democratic hold | Swing | | |

#### Gangbuk A

Gangbuk A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Chun Joon-ho | 49,490 | 57.7 | +15.0 |
| | United Future | Cheong Yang-seog | 33,840 | 39.5 | +1.4 |
| | Minjung Party | Kim Eun-jin | 1,457 | 1.7 | new |
| | Independent | Seon Gye-seon | 903 | 1.1 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,505 | – | – |
| Turnout | Turnout | Turnout | 85,690 | 61.8 | +7.0 |
| Registered electors | Registered electors | Registered electors | 141,126 | | |
| | Democratic gain from United Future | Democratic gain from United Future | Swing | | |

#### Gangbuk B

Gangbuk B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Park Yong-jin | 57,013 | 64.5 | +13.4 |
| | United Future | Ahn Hong-ryeol | 30,708 | 34.7 | −0.5 |
| | National Revolutionary Dividends | Jwa Tae-hong | 737 | 0.7 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,181 | – | – |
| Turnout | Turnout | Turnout | 89,639 | 65.2 | +8.5 |
| Registered electors | Registered electors | Registered electors | 137,495 | | |
| | Democratic hold | Democratic hold | Swing | | |

#### Dobong A

Dobong A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | In Jae-keun | 50,653 | 54.0 | −6.1 |
| | United Future | Kim Jae-seop | 37,697 | 40.5 | +0.6 |
| | Justice | Yoon Oh | 4,577 | 4.9 | New |
| | National Revolutionary Dividends | Park Young-chan | 554 | 0.6 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 950 | – | – |
| Turnout | Turnout | Turnout | 93,751 | 66.4 | +9.7 |
| Registered electors | Registered electors | Registered electors | 142,625 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Dobong B

Dobong B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Oh Gi-hyung | 51,756 | 53.0 | +16.6 |
| | United Future | Kim Seon-dong | 44,554 | 45.6 | +2.9 |
| | Independent | Choi Soon-ja | 683 | 0.7 | new |
| | National Revolutionary Dividends | Kim Gwan-seok | 641 | 0.7 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,292 | – | – |
| Turnout | Turnout | Turnout | 97,634 | 66.5 | +7.3 |
| Registered electors | Registered electors | Registered electors | 148,641 | | |
| | Democratic gain from United Future | Democratic gain from United Future | Swing | | |

#### Nowon A

Nowon A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Koh Yong-jin | 53,911 | 56.8 | +15.0 |
| | United Future | Lee No-keun | 36,782 | 38.7 | −0.6 |
| | Minjung Party | Choi Na-young | 3,761 | 4.0 | new |
| | National Revolutionary Dividends | Cho Deok-sil | 487 | 0.5 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,092 | – | – |
| Turnout | Turnout | Turnout | 94,941 | 69.1 | +6.8 |
| Registered electors | Registered electors | Registered electors | 138,917 | | |
| | Democratic hold | Democratic hold | Swing | | |

#### Nowon B

Nowon B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Woo Won-shik | 70,740 | 62.7 | +10.7 |
| | United Future | Lee Dong-seop | 45,543 | 36.5 | +6.7 |
| | National Revolutionary Dividends | Cha Dong-ik | 906 | 0.8 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,382 | – | – |
| Turnout | Turnout | Turnout | 114,406 | 70.7 | +6.0 |
| Registered electors | Registered electors | Registered electors | 163,736 | | |
| | Democratic hold | Democratic hold | Swing | | |

#### Nowon C

Nowon C :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Kim Seong-hwan | 55,556 | 53.2 | +39.2 |
| | United Future | Lee Jun-seok | 46,373 | 44.4 | +13.0 |
| | Justice | Lee Nam-soo | 1,645 | 1.6 | −0.3 |
| | Minjung | Kim Seon-gyeong | 551 | 0.5 | +0.2 |
| | National Revolutionary Dividends | Kim Gwang-cheol | 400 | 0.4 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 890 | – | – |
| Turnout | Turnout | Turnout | 104,525 | 69.6 | +4.7 |
| Registered electors | Registered electors | Registered electors | 151,435 | | |
| | Democratic gain from People | Democratic gain from People | Swing | | |

#### Eunpyeong A

Eunpyeong A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Park Joo-min | 82,954 | 64.3 | +9.4 |
| | United Future | Hong In-jeong | 49,727 | 33.9 | −6.9 |
| | Minsaeng Party | Han Woong | 2,642 | 1.2 | new |
| | National Revolutionary Dividends | Rho Byong-hyeon | 880 | 0.6 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,439 | – | – |
| Turnout | Turnout | Turnout | 134,310 | 65.6 | +9.8 |
| Registered electors | Registered electors | Registered electors | 206,917 | | |
| | Democratic hold | Democratic hold | Swing | | |

#### Eunpyeong B

Eunpyeong B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Kang Byung-won | 78,897 | 57.4 | +20.7 |
| | United Future | Heo Yong-seok | 49,796 | 36.2 | new |
| | Justice | Kim Jong-min | 6,127 | 4.5 | new |
| | Basic Income Party | Shin Min-joo | 2,600 | 1.9 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 625 | – | – |
| Turnout | Turnout | Turnout | 137,420 | 66.2 | +8.1 |
| Registered electors | Registered electors | Registered electors | 210,129 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Seodaemun A

Seodaemun A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Woo Sang-ho | 47,980 | 53.3 | −1.6 |
| | United Future | Lee Sung-hyun | 37,522 | 41.6 | +1.4 |
| | Independent | Shin Ji-ye | 2,916 | 3.2 | new |
| | Minjung | Chun Jin-hui | 1,026 | 1.1 | new |
| | National Revolutionary Dividends Party | Chun Jin-hui | 331 | 0.4 | new |
| | Our Republican Party | Shin Min-ho | 330 | 0.4 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 991 | – | – |
| Turnout | Turnout | Turnout | 90,105 | 69.1 | +6.8 |
| Registered electors | Registered electors | Registered electors | 131,930 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Seodaemun B

Seodaemun B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Kim Yeong-ho | 58,328 | 61.3 | +12.4 |
| | United Future | Song Joo-beom | 35,853 | 37.7 | −2.2 |
| | National Revolutionary Dividends | Oh Soo-cheong | 922 | 1.0 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,425 | – | – |
| Turnout | Turnout | Turnout | 95,103 | 68.3 | +7.2 |
| Registered electors | Registered electors | Registered electors | 141,386 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Mapo A

Mapo A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Noh Woong-rae | 53,160 | 56.0 | +4.1 |
| | United Future | Kang Seung-kyoo | 40,775 | 43.0 | +9.8 |
| | Reunification Democratic Party | Park Seon-ah | 512 | 0.5 | new |
| | National Revolutionary Dividends | Kim Myung-sook | 482 | 0.5 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,129 | – | – |
| Turnout | Turnout | Turnout | 94,929 | 70.6 | +7.1 |
| Registered electors | Registered electors | Registered electors | 136,147 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Mapo B

Mapo B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Jung Chung-rae | 50,653 | 53.8 | +11.5 |
| | United Future | Kim Sung-dong | 37,697 | 36.8 | +4.8 |
| | Justice Party | Oh Hyun-joo | 2,334 | 8.9 | +4.9 |
| | National Revolutionary Dividends | Lee So-young | 554 | 0.6 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,591 | – | – |
| Turnout | Turnout | Turnout | 128,984 | 68.8 | +6.9 |
| Registered electors | Registered electors | Registered electors | 189,669 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Yangcheon A

Yangcheon A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Hwang Hee | 78,196 | 51.9 | −0.3 |
| | United Future | Song Han-seop | 67,814 | 45.0 | +5.1 |
| | Independent | Yeom Dong-uk | 4,244 | 2.8 | −5.2 |
| | National Revolutionary Dividends | Choi Sa-hyun | 556 | 0.4 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,366 | – | – |
| Turnout | Turnout | Turnout | 150,810 | 73.6 | +9.2 |
| Registered electors | Registered electors | Registered electors | 206,747 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Yangcheon B

Yangcheon B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Lee Yong-seon | 66,759 | 51.9 | +17.6 |
| | United Future | Sohn Yeong-taek | 47,897 | 41.3 | −0.7 |
| | National Revolutionary Dividends | Choi Sa-hyun | 789 | 0.7 | new |
| | Our Republican | Park Cheol-seong | 577 | 0.5 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,553 | – | – |
| Turnout | Turnout | Turnout | 116,022 | 66.7 | +8.0 |
| Registered electors | Registered electors | Registered electors | 176,413 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Gangseo A

Gangseo A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Kang Sun-woo | 63,397 | 55.9 | +18.7 |
| | United Future | Gu Sang-chan | 43,519 | 38.4 | +6.2 |
| | Independent | Paek Cheol | 5,490 | 4.8 | −3.4 |
| | Independent | Kim Beom-tae | 529 | 0.5 | new |
| | National Revolutionary Dividends | No Kyung-hyui | 480 | 0.4 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,101 | – | – |
| Turnout | Turnout | Turnout | 173,756 | 65.9 | +6.8 |
| Registered electors | Registered electors | Registered electors | 206,747 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Gangseo B

Gangseo B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Jin Seong-jun | 66,684 | 56.2 | +18.9 |
| | United Future | Kim Tae-woo | 50,281 | 42.3 | −3.6 |
| | Our Republican | Park Hye-yeong | 1,087 | 0.9 | new |
| | National Revolutionary Dividends | Chung Hong-dae | 705 | 0.6 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,524 | – | – |
| Turnout | Turnout | Turnout | 118,757 | 68.3 | +9.2 |
| Registered electors | Registered electors | Registered electors | 176,017 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Gangseo C

Gangseo C :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Han Jeoung-ae | 64,515 | 59.9 | +16.4 |
| | United Future | Kim Cheol-geun | 39,355 | 36.6 | +4.3 |
| | Independent | Kim Tae-yun | 1,659 | 1.5 | new |
| | Minjung | Kwon Hye-in | 1,575 | 1.5 | new |
| | National Revolutionary Dividends Party | Do Chae-sook | 559 | 0.5 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,299 | – | – |
| Turnout | Turnout | Turnout | 107,663 | 69.1 | +6.8 |
| Registered electors | Registered electors | Registered electors | 161,351 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Guro A

Guro A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Lee In-young | 75,865 | 53.9 | +1.9 |
| | United Future | Kim Jae-sik | 55,347 | 39.3 | +5.4 |
| | Justice | Lee Ho-seong | 6,722 | 4.8 | +2.4 |
| | Minjung | Yoo Seon-hui | 1,539 | 1.1 | +0.2 |
| | National Revolutionary Dividends Party | Kim Jang-won | 628 | 0.5 | new |
| | Our Republican Party | Hwang In-kyu | 330 | 576 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,404 | – | – |
| Turnout | Turnout | Turnout | 140,677 | 69.1 | +6.2 |
| Registered electors | Registered electors | Registered electors | 205,756 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Guro B

Guro B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Youn Kun-young | 56,065 | 57.1 | +5.0 |
| | United Future | Kim Yong-tae | 37,018 | 37.7 | +3.7 |
| | Independent | Kang Yo-shik | 4,558 | 4.6 | new |
| | National Revolutionary Dividends | Choi Sa-hyun | 638 | 0.7 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,119 | – | – |
| Turnout | Turnout | Turnout | 98,279 | 67.8 | +6.8 |
| Registered electors | Registered electors | Registered electors | 146,644 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Geumcheon

Geumcheon :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Choi Ki-sang | 64,735 | 49.6 | +16.6 |
| | United Future | Kang Seong-man | 46,278 | 35.5 | +2.9 |
| | Independent | Cha Seong-soo | 18,365 | 14.1 | new |
| | National Revolutionary Dividends | Park Chang-rae | 1,057 | 0.8 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,742 | – | – |
| Turnout | Turnout | Turnout | 130,435 | 63.6 | +7.6 |
| Registered electors | Registered electors | Registered electors | 207,730 | | |
| | Democratic gain from | Democratic gain from | Democratic gain from | Democratic gain from |

#### Yeongdeungpo A

Yeongdeungpo A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Kim Young-joo | 72,445 | 56.3 | +11.0 |
| | United Future | Moon Byeong-ho | 49,292 | 38.3 | −1.5 |
| | Justice Party | Jeong Jae-min | 6,267 | 4.9 | +1.0 |
| | National Revolutionary Dividends | Ahn Seong-woo | 760 | 0.6 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,355 | – | – |
| Turnout | Turnout | Turnout | 128,764 | 66.4 | +4.7 |
| Registered electors | Registered electors | Registered electors | 187,977 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Yeongdeungpo B

Yeongdeungpo B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Kim Min-seok | 47,075 | 50.3 | +9.2 |
| | United Future | Park Yong-chan | 41,537 | 44.4 | +6.7 |
| | Independent | Lee Jung-hyun | 3,311 | 3.5 | new |
| | Minsaeng | Kim Ji-hyang | 1,278 | 1.4 | new |
| | National Revolutionary Dividends | Lee Sang-ryun | 456 | 0.5 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,153 | – | – |
| Turnout | Turnout | Turnout | 93,657 | 68.0 | +9.0 |
| Registered electors | Registered electors | Registered electors | 139,384 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Dongjak A

Dongjak A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Kim Byung-kee | 70,290 | 55.3 | +18.8 |
| | United Future | Jang Jin-young | 54,526 | 42.9 | +8.2 |
| | Minjung Party | Yoon Hyun-joo | 1,494 | 1.2 | +0.2 |
| | National Revolutionary Dividends | Lee Seo-eun | 812 | 0.6 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,489 | – | – |
| Turnout | Turnout | Turnout | 127,122 | 69.4 | +6.8 |
| Registered electors | Registered electors | Registered electors | 185,301 | | |
| | Democratic hold | Democratic hold | Swing | | |

#### Dongjak B

Dongjak B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Lee Su-jin | 61,407 | 52.2 | +20.7 |
| | United Future | Na Kyung-won | 53,026 | 45.0 | +1.6 |
| | Justice Party | Lee Ho-yeong | 2,334 | 2.0 | new |
| | Minjung Party | Choi Seo-hyeon | 614 | 0.5 | −0.1 |
| | National Revolutionary Dividends | Lee Ju-yang | 345 | 0.3 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,274 | – | – |
| Turnout | Turnout | Turnout | 119,000 | 73.4 | +9.0 |
| Registered electors | Registered electors | Registered electors | 162,038 | | |
| | Democratic gain from United Future | Democratic gain from United Future | Swing | | |

#### Gwanak A

Gwanak A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Yoo Ki-hong | 83,479 | 55.9 | +18.4 |
| | Independent | Kim Sung-shik | 50,078 | 33.6 | new |
| | Justice Party | Lee Dong-yeong | 6,306 | 4.2 | +1.2 |
| | Our Republican Party | Kwon Mi-sung | 2,223 | 2.3 | new |
| | Minsaeng | Lee Seung-han | 2,749 | 1.8 | new |
| | Minjung Party | Song Myeong-suk | 2,223 | 1.5 | +0.6 |
| | National Revolutionary Dividends | Kim Yong-tae | 947 | 0.6 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,274 | – | – |
| Turnout | Turnout | Turnout | 119,000 | 73.4 | +9.0 |
| Registered electors | Registered electors | Registered electors | 162,038 | | |
| | Democratic gain from Independent | Democratic gain from Independent | Swing | | |

#### Gwanak B

Gwanak B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Jeong Tae-ho | 72,531 | 53.9 | +17.6 |
| | United Future | Oh Shin-hwan | 56,130 | 41.7 | +4.7 |
| | Minsaeng | Han In-soo | 2,143 | 1.6 | new |
| | Minjung Party | Kim Han-young | 1,483 | 1.1 | −0.8 |
| | Independent | Ryu Hyeon-sun | 1,066 | 0.8 | new |
| | National Revolutionary Dividends | Seo Hui-seong | 625 | 0.5 | new |
| | Our Republican Party | Park Hyun-seong | 589 | 0.4 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,781 | – | – |
| Turnout | Turnout | Turnout | 134,563 | 65.0 | +6.1 |
| Registered electors | Registered electors | Registered electors | 209,866 | | |
| | Democratic gain from United Future | Democratic gain from United Future | Swing | | |

#### Seocho A

Seocho A :
| Party | Party | Candidate | Votes | % | ±% |
| | United Future | Yoon Hee-sook | 72,896 | 62.6 | +5.6 |
| | Democratic | Lee Jeong-geun | 42,971 | 36.9 | +8.4 |
| | National Revolutionary Dividends | Shin Bang-ho | 575 | 0.5 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,060 | – | – |
| Turnout | Turnout | Turnout | 116,442 | 72.2 | +12.6 |
| Registered electors | Registered electors | Registered electors | 162,087 | | |
| | United Future hold | United Future hold | Swing | | |

#### Seocho B

Seocho B :
| Party | Party | Candidate | Votes | % | ±% |
| | United Future | Park Sung-joong | 49,727 | 53.7 | +6.8 |
| | Democratic | Park Kyung-mee | 82,954 | 45.0 | +8.6 |
| | Minsaeng Party | Lee Jung-ho | 1,105 | 0.8 | new |
| | National Revolutionary Dividends | Lee Jin-ho | 733 | 0.5 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,331 | – | – |
| Turnout | Turnout | Turnout | 138,725 | 71.4 | +11.2 |
| Registered electors | Registered electors | Registered electors | 196,164 | | |
| | United Future hold | United Future hold | Swing | | |

#### Gangnam A

Gangnam A :
| Party | Party | Candidate | Votes | % | ±% |
| | United Future | Thae Ku-min | 60,324 | 58.4 | +3.6 |
| | Democratic | Kim Sung-gon | 40,935 | 39.6 | −5.5 |
| | Minsaeng Party | Chung Dong-hui | 1,378 | 1.3 | new |
| | National Revolutionary Dividends | Kim Jong-hun | 642 | 0.6 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,206 | – | – |
| Turnout | Turnout | Turnout | 103,279 | 62.4 | +12.8 |
| Registered electors | Registered electors | Registered electors | 167,537 | | |
| | United Future hold | United Future hold | Swing | | |

#### Gangnam B

Gangnam B :
| Party | Party | Candidate | Votes | % | ±% |
| | United Future | Park Jin | 51,762 | 51.0 | +6.5 |
| | Democratic | Jeon Hyun-hee | 47,157 | 46.4 | +5.1 |
| | Minsaeng Party | Kim Kwang-jong | 1,341 | 1.3 | new |
| | Independent | Kim Min-chan | 919 | 0.9 | new |
| | National Revolutionary Dividends | Kang Ki-hyun | 422 | 0.4 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 868 | – | – |
| Turnout | Turnout | Turnout | 101,601 | 73.0 | +10.6 |
| Registered electors | Registered electors | Registered electors | 140,330 | | |
| | United Future hold | United Future hold | Swing | | |

#### Gangnam C

Gangnam C :
| Party | Party | Candidate | Votes | % | ±% |
| | United Future | Yu Kyung-jun | 70,917 | 65.4 | +7.6 |
| | Democratic | Kim Han-gyu | 36,423 | 33.6 | −6.0 |
| | National Revolutionary Dividends | Go Ahn-seong | 343 | 0.3 | new |
| | Pro-Park New Party | Do Yo-jong | 270 | 0.3 | new |
| | Saenuri | Yan Han-byeol | 269 | 0.3 | new |
| | Our Republican | Chun Tae-yeol | 246 | 0.2 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 968 | – | – |
| Turnout | Turnout | Turnout | 108,468 | 72.1 | +14.5 |
| Registered electors | Registered electors | Registered electors | 151,713 | | |
| | United Future hold | United Future hold | Swing | | |

#### Songpa A

Songpa A :
| Party | Party | Candidate | Votes | % | ±% |
| | United Future | Kim Woong | 58,318 | 51.2 | +7.2 |
| | Democratic | Cho Jae-hui | 54,704 | 48.0 | +6.4 |
| | National Revolutionary Dividends | Cho Eun-jeong | 875 | 0.8 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1088 | – | – |
| Turnout | Turnout | Turnout | 113,897 | 72.1 | +10.4 |
| Registered electors | Registered electors | Registered electors | 159,514 | | |
| | United Future hold | United Future hold | United Future hold | United Future hold |

#### Songpa B

Songpa B :
| Party | Party | Candidate | Votes | % | ±% |
| | United Future | Bae Hyun-jin | 72,072 | 50.5 | +50.5 |
| | Democratic | Cho Jae-sung | 65,763 | 46.0 | +2.0 |
| | Justice | Ahn Sook-hyun | 4,330 | 3.0 | new |
| | National Revolutionary Dividends | Kim Joo-yeon | 362 | 0.3 | new |
| | Our Republican Party | Kwon Joo | 302 | 0.2 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1106 | – | – |
| Turnout | Turnout | Turnout | 142,829 | 72.0 | +13.3 |
| Registered electors | Registered electors | Registered electors | 199,967 | | |
| | United Future gain from Democratic | United Future gain from Democratic | Swing | | |

#### Songpa C

Songpa C :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Nam In-soon | 78,789 | 52.5 | +7.6 |
| | United Future | Kim Keun-sik | 64,869 | 43.2 | +3.5 |
| | Minsaeng | Choi Jo-woong | 3,310 | 2.2 | new |
| | Independent | Lee Jong-sik | 2,415 | 1.6 | new |
| | National Revolutionary Dividends | Kang Deok-su | 721 | 0.5 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1,409 | – | – |
| Turnout | Turnout | Turnout | 150,104 | 70.3 | +8.6 |
| Registered electors | Registered electors | Registered electors | 151,513 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Gangdong A

Gangdong A :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Jin Sun-mee | 50,653 | 54.0 | −6.1 |
| | United Future | Lee Su-hui | 37,697 | 40.5 | +0.6 |
| | National Revolutionary Dividends | Kang Ok-gi | 554 | 0.6 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 950 | – | – |
| Turnout | Turnout | Turnout | 93,751 | 66.4 | +9.7 |
| Registered electors | Registered electors | Registered electors | 142,625 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

#### Gangdong B

Gangdong B :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Lee Hae-sik | 59,175 | 54.5 | +13.4 |
| | United Future | Lee Jae-young | 45,617 | 42.1 | +4.1 |
| | Justice Party | Kwon Jung-do | 2,996 | 2.8 | new |
| | National Revolutionary Dividends | Park Hui-yeol | 705 | 0.7 | new |
| Rejected ballots | Rejected ballots | Rejected ballots | 1158 | – | – |
| Turnout | Turnout | Turnout | 108,493 | 66.2 | +8.3 |
| Registered electors | Registered electors | Registered electors | 165,610 | | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |