Opinion polling for the 2020 South Korean legislative election
In the run up to the 2020 South Korean legislative election, various organisations carried out opinion polling to gauge voting intention in South Korea. Results of such polls are displayed in this article.
Opinion polls
Campaign period
Constituency votes
| Polling firm | Fieldwork date | Sample size |
Resp. | DP | UFP | MP | JP | ORP | MIN | PNP | KEP | Others | Lead |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| style="background:Template:Minjoo Party of Korea/meta/color;"| | style="background:Template:United Future Party/meta/color;"| | style="background:Template:Party for People's Livelihoods/meta/color;"| | style="background:Template:Justice Party (South Korea)/meta/color;"| | style="background:Template:Our Republican Party/meta/color;"| | style="background:Template:Minjung Party/meta/color;"| | style="background:Template:Pro-Park New Party/meta/color;"| | style="background:Template:Korea Economic Party/meta/color;"| | ||||||
| Gallup | 7 - 8 Apr 2020 | 1,000 | – | 44 | 23 | 0.7 | 6 | 0.7 | 0.6 | 0.3 | - | 1 | style="background:Template:Minjoo Party of Korea/meta/color;color:#FFFFFF;"| 21 |
| Realmeter | 6 - 8 Apr 2020 | 1,509 | – | 42.6 | 30.2 | 2.6 | 4.9 | 1.1 | 1.6 | 2.0 | 1.7 | 1.5 | style="background:Template:Minjoo Party of Korea/meta/color;color:#FFFFFF;"| 12.4 |
| Realmeter | 30 Mar - 3 Apr 2020 | 2,521 | – | 43.2 | 28.8 | 2.2 | 5.4 | 1.4 | 1.4 | 1.7 | 1.3 | 1.6 | style="background:Template:Minjoo Party of Korea/meta/color;color:#FFFFFF;"| 14.4 |
| Gallup | 31 Mar - 2 Apr 2020 | 1,002 | – | 41 | 23 | 0.1 | 4 | 0.5 | 0.3 | 0.3 | - | 1 | style="background:Template:Minjoo Party of Korea/meta/color;color:#FFFFFF;"| 18 |
| C&I | 28-30 Mar 2020 | 1,000 | – | 44.7 | 33.3 | 1.3 | 4.5 | 1.6 | 2 | 1.9 | - | 3.7 | style="background:Template:Minjoo Party of Korea/meta/color;color:#FFFFFF;"| 11.4 |
| Research&Research | 28-29 Mar 2020 | 1,001 | – | 38 | 25.3 | 0.9 | 3.4 | 2 | 1 | - | - | 4.2 | style="background:Template:Minjoo Party of Korea/meta/color;color:#FFFFFF;"| 12.7 |
Proportional votes
| Polling firm | Fieldwork date | Sample size |
Resp. | PlP | FKP | MP | JP | ORP | MIN | PP | PNP | ODP | KEP | Others | Lead |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| style="background:Template:Future Korea Party/meta/color;"| | style="background:Template:Party for People's Livelihoods/meta/color;"| | style="background:Template:Justice Party (South Korea)/meta/color;"| | style="background:Template:Our Republican Party/meta/color;"| | style="background:Template:Minjung Party/meta/color;"| | style="background:Template:People Party (South Korea)/meta/color;"| | style="background:Template:Pro-Park New Party/meta/color;"| | style="background:Template:Open Democrats/meta/color;"| | style="background:Template:Korea Economic Party/meta/color;"| | |||||||
| Gallup | 7 - 8 Apr 2020 | 1,000 | – | 23 | 22 | 2.6 | 13 | 1 | - | 6 | - | 8 | - | 2 | 1 |
| Realmeter | 6 - 8 Apr 2020 | 1,509 | – | 24.2 | 27.8 | 3 | 8.1 | 1 | 1.4 | 5.3 | 2.4 | 12.3 | 1.7 | 2.7 | 3.6 |
| Ipsos | 4 - 6 Apr 2020 | 1,004 | – | 23.2 | 24.2 | 1.2 | 12.5 | 1.5 | - | 7.4 | - | 8.6 | - | - | 1 |
| Realmeter | 30 Mar - 3 Apr 2020 | 2,521 | – | 21.7 | 25.0 | 2.8 | 8.5 | 1.9 | 1.6 | 4.7 | 2.1 | 14.4 | 1.6 | 3.2 | 3.3 |
| Gallup | 31 Mar - 2 Apr 2020 | 1,002 | – | 21 | 23 | 2 | 11 | 1 | - | 5 | - | 10 | - | 2 | 2 |
| Realmeter | 30 Mar - 1 Apr 2020 | 1,514 | – | 20.8 | 25.1 | 2.9 | 8.2 | 2 | 1.2 | 5.1 | 1.8 | 14.3 | 2.0 | 3.2 | 4.3 |
| C&I | 28-30 Mar 2020 | 1,000 | – | 22.5 | 31.9 | 2.4 | 7.7 | 2.2 | 1.8 | 5.3 | 1.6 | 15.5 | - | 3.4 | 9.4 |
| Research&Research | 28-29 Mar 2020 | 1,001 | – | 16.5 | 21.8 | 0.9 | 8.5 | 1.3 | - | 3.4 | - | 9 | - | 1.1 | 5.3 |
| Realmeter | 23-27 Mar 2020 | 2,531 | – | 29.8 | 27.4 | 2.2 | 5.9 | 2 | 1.2 | 4.3 | 2.3 | 11.7 | - | 2.5 | 2.4 |
Pre-campaign period
2020
| Date(s) Conducted | Polling firm | DP | UFP | MP | JP | ORP | MIN | PP | PNP | ODP | Others | Undecided | Lead |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| style="background:Template:Minjoo Party of Korea/meta/color;"| | style="background:Template:United Future Party/meta/color;"| | style="background:Template:Party for People's Livelihoods/meta/color"| | style="background:Template:Justice Party (South Korea)/meta/color"| | style="background:Template:Our Republican Party/meta/color;"| | style="background:Template:Minjung Party/meta/color;"| | style="background:Template:People Party (South Korea)/meta/color"| | style="background:Template:Pro-Park New Party/meta/color;"| | style="background:Template:Open Democrats/meta/color;"| | |||||
| 24-26 March | Gallup Korea | 37 | 22 | 0 | 5 | 1 | — | 4 | — | 2 | 2 | 27 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 15 |
| 23-27 March | Realmeter | 44.6 | 30.0 | 1.8 | 4.6 | 1.8 | 1.0 | 3.3 | 1.6 | — | 2.8 | 8.4 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 14.6 |
| Date(s) Conducted | Polling firm | DP | UFP | MP | JP | LRP | MIN | PP | PNP | ODP | Others | Undecided | Lead |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| style="background:Template:Minjoo Party of Korea/meta/color;"| | style="background:Template:United Future Party/meta/color;"| | style="background:Template:Party for People's Livelihoods/meta/color"| | style="background:Template:Justice Party (South Korea)/meta/color"| | style="background:Template:Liberty Republican Party/meta/color;"| | style="background:Template:Minjung Party/meta/color;"| | style="background:Template:People Party (South Korea)/meta/color"| | style="background:Template:Pro-Park New Party/meta/color;"| | style="background:Template:Open Democrats/meta/color;"| | |||||
| 17-19 March | Gallup Korea | 38 | 23 | 1 | 4 | 1 | — | 4 | — | 1 | 1 | 28 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 15 |
| 16-20 March | Realmeter | 42.1 | 33.6 | 1.4 | 3.7 | 1.4 | 1.3 | 4.0 | 2.1 | — | 1.9 | 8.6 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 8.5 |
| 10-12 March | Gallup Korea | 39 | 22 | 0 | 6 | 1 | — | 3 | — | — | 1 | 28 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 17 |
| 9-13 March | Realmeter | 41.5 | 32.1 | 2.1 | 4.3 | 2.4 | 1.2 | 3.9 | — | — | 1.6 | 10.9 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 9.4 |
| Date(s) Conducted | Polling firm | DP | UFP | MP | JP | ORP | MIN | PP | Others | Undecided | Lead |
|---|---|---|---|---|---|---|---|---|---|---|---|
| style="background:Template:Minjoo Party of Korea/meta/color;"| | style="background:Template:United Future Party/meta/color;"| | style="background:Template:Party for People's Livelihoods/meta/color"| | style="background:Template:Justice Party (South Korea)/meta/color"| | style="background:Template:Our Republican Party/meta/color;"| | style="background:Template:Minjung Party/meta/color;"| | style="background:Template:People Party (South Korea)/meta/color"| | |||||
| 3-5 March | Gallup Korea | 36 | 22 | 1 | 6 | — | — | 2 | 2 | 31 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 14 |
| 2-6 March | Realmeter | 41.7 | 31.2 | 4.1 | 4.9 | 1.6 | 0.8 | 4.7 | 1.3 | 9.7 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 10.5 |
| 25-27 February | Gallup Korea | 37 | 21 | 1 | 6 | — | — | 2 | 1 | 33 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 16 |
| 25-28 February | Realmeter | 41.0 | 31.0 | 4.1 | 4.3 | 1.6 | 1.0 | 1.7 | 1.7 | 13.6 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 10.0 |
| Date(s) Conducted | Polling firm | DP | UFP | Bareunmirae | NA | JP | PDP | ORP | MIN | PP | Others | Undecided | Lead |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| style="background:Template:Minjoo Party of Korea/meta/color;"| | style="background:Template:United Future Party/meta/color;"| | style="background:Template:Bareunmirae Party/meta/color"| | style="background:Template:Justice Party (South Korea)/meta/color"| | style="background:Template:Party for Democracy and Peace/meta/color"| | style="background:Template:Our Republican Party/meta/color;"| | style="background:Template:Minjung Party/meta/color;"| | style="background:Template:People Party (South Korea)/meta/color"| | ||||||
| 18-20 February | Gallup Korea | 36 | 23 | 4 | — | 7 | — | — | — | 2 | 1 | 27 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 13 |
| 17-21 February | Realmeter | 40.5 | 33.7 | 3.0 | 1.3 | 4.1 | 2.2 | 1.5 | 1.0 | 2.3 | 0.9 | 9.5 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 6.8 |
| Date(s) Conducted | Polling firm | DP | LKP | Bareunmirae | NCP | NA | JP | PDP | ORP | MIN | Others | Undecided | Lead |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| style="background:Template:Minjoo Party of Korea/meta/color;"| | style="background:Template:Liberty Korea Party/meta/color;"| | style="background:Template:Bareunmirae Party/meta/color"| | style="background:Template:Justice Party (South Korea)/meta/color"| | style="background:Template:Party for Democracy and Peace/meta/color"| | style="background:Template:Our Republican Party/meta/color;"| | style="background:Template:Minjung Party/meta/color;"| | |||||||
| 11-13 February | Gallup Korea | 37 | 21 | 3 | 3 | 5 | — | — | — | 4 | 1 | 27 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 16 |
| 10-14 February | Realmeter | 39.9 | 32.0 | 2.6 | 3.9 | 0.9 | 4.8 | 1.5 | 1.2 | 1.3 | 0.8 | 11.1 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 7.9 |
2019
| Date(s) Conducted | Polling firm | Democratic | Liberty Korea | Bareunmirae | Democracy and Peace | Justice | Others | Lead |
|---|---|---|---|---|---|---|---|---|
| style="background:Template:Minjoo Party of Korea/meta/color;"| | style="background:Template:Liberty Korea Party/meta/color;"| | style="background:Template:Justice Party (South Korea)/meta/color"| | ||||||
| 19–21 March | Gallup Korea | 37 | 21 | 7 | 1 | 9 | 1 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 16 |
| 18–20 March | Realmeter | 39.9 | 31.9 | 4.9 | 2.3 | 7.3 | 1.5 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 8.0 |
| 11–15 March | Realmeter | 36.6 | 31.7 | 5.9 | 2.1 | 6.9 | 1.7 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 4.9 |
| 12–14 March | Gallup Korea | 39 | 22 | 7 | 1 | 7 | 1 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 17 |
| 4–8 March | Realmeter | 37.2 | 30.4 | 6.2 | 2.1 | 7 | 1.6 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 6.8 |
| 5–7 March | Gallup Korea | 39 | 20 | 7 | 1 | 8 | 0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 19 |
| 26–28 February | Gallup Korea | 38 | 20 | 7 | 1 | 8 | 0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 18 |
| 25–28 February | Realmeter | 38.3 | 28.8 | 7.3 | 2.7 | 6.9 | 1.8 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 9.5 |
| 19–21 February | Gallup Korea | 40 | 19 | 6 | 1 | 9 | 1 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 21 |
| 18–22 February | Realmeter | 40.4 | 26.8 | 6.6 | 3.2 | 7.1 | 1.5 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 13.6 |
| 12–14 February | Gallup Korea | 40 | 19 | 8 | 1 | 8 | 1 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 21 |
| 11–15 February | Realmeter | 40.3 | 25.2 | 6 | 2.8 | 7 | 1.6 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 15.1 |
| 7–8 February | Realmeter | 38.9 | 28.9 | 6.8 | 2.9 | 6.2 | 1.9 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 10 |
| 29–31 January | Gallup Korea | 39 | 21 | 6 | 1 | 9 | 0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 18 |
| 28 January – 1 February | Realmeter | 38.2 | 27.4 | 6.3 | 2.5 | 7.2 | 2.3 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 10.8 |
| 21–25 January | Realmeter | 38.7 | 26.7 | 5.5 | 3.1 | 8.1 | 2 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 12 |
| 15–17 January | Gallup Korea | 40 | 16 | 8 | 1 | 8 | 0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 24 |
| 14–18 January | Realmeter | 39.8 | 24.3 | 6.3 | 2.7 | 7.5 | 2 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 15.5 |
| 8–10 January | Gallup Korea | 40 | 16 | 7 | 1 | 9 | 0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 24 |
| 7–11 January | Realmeter | 40.1 | 23.9 | 6.4 | 2.2 | 9.1 | 2.2 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 16.2 |
2018
| Date(s) Conducted | Polling firm | Democratic | Liberty Korea | Bareunmirae | Democracy and Peace | Justice | Others | Lead |
|---|---|---|---|---|---|---|---|---|
| style="background:Template:Minjoo Party of Korea/meta/color;"| | style="background:Template:Saenuri Party/meta/color;"| | style="background:Template:Justice Party (South Korea)/meta/color"| | ||||||
| 15–17 October | Realmeter | 42.3 | 20 | 6.6 | 3.1 | 9.8 | 2.2 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 22.3 |
| 2–4 October | Gallup Korea | 48 | 11 | 7 | 1 | 9 | 1 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 37 |
| 28–30 September | ResearchView | 48 | 18 | 7 | 2 | 8 | 2 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 30 |
| 23 September | R&Search | 42.5 | 17.7 | 7.1 | 3 | 9.1 | 2.8 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 24.8 |
| 11–13 September | Gallup Korea | 40 | 11 | 8 | 0.5 | 12 | 0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 28 |
| 3–4 September | Research&Research | 41.3 | 12.6 | 7 | 0.5 | 10 | 2.4 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 28.7 |
| 27–31 August | Realmeter | 41.4 | 18.8 | 6.6 | 2.8 | 11.8 | 2.1 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 22.6 |
| 21–23 August | Gallup Korea | 42 | 11 | 5 | 1 | 15 | 1 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 27 |
| 13–17 August | Realmeter | 39.6 | 19.9 | 7.3 | 2.4 | 13.3 | 1.7 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 19.7 |
| 4–5 August | ResearchView | 41.9 | 15.8 | 6.6 | 1.2 | 17 | 2.4 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 24.9 |
| 31 July – 2 August | Gallup Korea | 41 | 11 | 5 | 1 | 15 | 0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 26 |
| 23–27 July | Realmeter | 44 | 18.6 | 7 | 2.9 | 12.5 | 1.6 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 25.4 |
| 10–12 July | Gallup Korea | 49 | 10 | 6 | 0.3 | 10 | 0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 39 |
| 9–11 July | Realmeter | 44.3 | 16.8 | 6.3 | 2.8 | 12.4 | 2.6 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 27.5 |
| 2–6 July | Realmeter | 47.5 | 18.3 | 5.8 | 2.9 | 10.4 | 2.6 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 29.2 |
| 30 June – 1 July | ResearchView | 48 | 20 | 5 | 4 | 12 | 4 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 28 |
| 26–28 June | Gallup Korea | 52 | 10 | 5 | 1 | 9 | 1 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 42 |
| 25–27 June | Realmeter | 47.8 | 18.3 | 5.3 | 2.3 | 10.1 | 2.6 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 29.5 |
| 18–20 June | Realmeter | 53.6 | 17.4 | 5.2 | 2.7 | 7.9 | 1.9 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 36.2 |
| 13 June | 2018 local elections | |||||||
| 28 May – 1 June | Realmeter | 52.2 | 19.8 | 5.6 | 2.9 | 6.3 | 1.9 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 32.4 |
| 23–24 May | Gallup Korea | 53 | 13 | 5 | 1 | 4 | 0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 40 |
| 14–18 May | Realmeter | 54.2 | 18.7 | 5.7 | 3.4 | 5.8 | 1.5 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 35.5 |
| 5–6 May | ResearchView | 55 | 20 | 7 | 2 | 6 | 2 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 35 |
| 28–29 April | KSOI | 58.8 | 11 | 6.8 | 0.6 | 4.2 | 2 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 47.8 |
| 9–13 April | Realmeter | 50.4 | 21.9 | 5.7 | 3.3 | 4.2 | 1.9 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 28.5 |
| 26–30 March | Realmeter | 51.3 | 20.7 | 6.8 | 2.4 | 5.2 | 2.2 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 30.6 |
| 20–22 March | Gallup Korea | 47 | 14 | 6 | 1 | 5 | 0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 33 |
| 26 February – 2 March | Realmeter | 50 | 19.7 | 6.8 | 3 | 4.5 | 2.6 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 30.3 |
| 20–22 February | Gallup Korea | 48 | 11 | 8 | 1 | 6 | 1 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 37 |
| 11–14 February | Kantar Public | 47.9 | 14.9 | 8.1 | 1.6 | 5.6 | 1.3 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 33 |
| 5–9 February | Realmeter | 44.4 | 19.1 | 11 | 4.2 | 7 | 2.1 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 25.3 |
2016 to 2017
| Date(s) Conducted | Polling firm | Democratic | Liberty Korea | People's | Bareun | Justice | Others | Lead |
|---|---|---|---|---|---|---|---|---|
| style="background:Template:Minjoo Party of Korea/meta/color;"| | style="background:Template:Saenuri Party/meta/color;"| | style="background:Template:People's Party (South Korea, 2016)/meta/color;"| | style="background:Template:Bareun Party/meta/color;"| | style="background:Template:Justice Party (South Korea)/meta/color"| | ||||
| 18–22 December | Realmeter | 52.0 | 17.8 | 4.9 | 5.7 | 5.2 | 1.6 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 34.2 |
| 5–7 December | Gallup Korea | 46 | 11 | 5 | 8 | 5 | 0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 35 |
| 18–19 November | Research & Research | 49.0 | 11.8 | 5.5 | 6.3 | 5.4 | 0.8 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 37.2 |
| 30 October – 1 November | Realmeter | 50.9 | 17.5 | 6.6 | 4.4 | 5.7 | 2.3 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 33.4 |
| 13–14 October | KSOI | 49.7 | 12.2 | 6.9 | 5.2 | 5.6 | 1.7 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 37.5 |
| 18–20 September | Realmeter | 49.8 | 17.0 | 6.0 | 6.3 | 4.7 | 2.8 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 32.8 |
| 28–30 August | Realmeter | 52.2 | 16.8 | 6.2 | 6.5 | 6.0 | 1.7 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 35.4 |
| 4–6 July | Gallup Korea | 50 | 14 | 4 | 8 | 6 | 0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 36 |
| 10–12 May | Realmeter | 44.7 | 13.0 | 8.8 | 8.3 | 9.6 | 1.3 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 31.7 |
| 9 May | 2017 presidential election | |||||||
| 26 April | Research & Research | 38.8 | 12.9 | 20.3 | 5.7 | 6.3 | 0.3 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 18.5 |
| 11–13 April | Gallup Korea | 41 | 9 | 24 | 4 | 4 | 0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 17 |
| 14 March | Hankook Research | 39.4 | 10.5 | 9.3 | 4.8 | 5.2 | 2.9 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 28.9 |
| 10 March | Impeachment of Park Geun-hye | |||||||
| 1–2 February | Realmeter | 36.4 | 11.6 | 12.1 | 7.9 | 4.8 | 2.7 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 24.8 |
| 28–30 January | JoWon C&I | 36.9 | 12.3 | 11.9 | 8.8 | 5.0 | 3.0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 24.6 |
| 10–12 January | Gallup Korea | 41 | 12 | 10 | 7 | 3 | 0 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;" | 29 |
| 2016 | ||||||||
| 2 November | 2016 South Korean political scandal begins | |||||||
| 24–26 October | Realmeter | 30.5 | 26.5 | 14.4 | – | 4.5 | 3.9 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;"| 4.0 |
| 26–30 September | Realmeter | 28.8 | 33.0 | 13.9 | – | 4.5 | 3.6 | style="background:Template:Saenuri Party/meta/color; color:white;"| 4.2 |
| 27–28 August | ResearchView | 30.6 | 27.6 | 14.3 | – | 7.4 | 0.7 | style="background:Template:Minjoo Party of Korea/meta/color; color:white;"| 3.0 |
| 31 July – 1 August | R&Search | 23.0 | 33.5 | 11.8 | – | 5.6 | – | style="background:Template:Saenuri Party/meta/color; color:white;"| 10.5 |
| 28–30 June | Gallup Korea | 23 | 30 | 14 | – | 6 | 0 | style="background:Template:Saenuri Party/meta/color; color:white;"| 7 |
| 30 May – 1 June | Realmeter | 29.8 | 30.1 | 17.7 | – | 7.6 | 2.9 | style="background:Template:Saenuri Party/meta/color; color:white;"| 0.3 |
| 19–21 Apr | Gallup Korea | 24 | 30 | 25 | – | 7 | 0 | style="background:Template:Saenuri Party/meta/color; color:white;"| 5 |
| 13 April 2016 | 2016 elections (PR) | 25.5 | 33.5 | 26.7 | - | 7.2 | 6.9 | style="background:Template:Saenuri Party/meta/color; color:white;" | 8.0 |
- General notes
- Gallup Korea provides poll results only to the nearest whole number.