Opinion polling for the next South Korean legislative election

This page lists public opinion polls conducted for the next South Korean legislative election. For more information, visit the National Election Survey Deliberation Committee of Korea.

2026

Fieldwork date Sample size Marginof error Polling firm DPK PPP RKP RP PP BIP SDP Others / Lead 28–30 Sep 1,000 ±3.1 NBS 35 25 3 2 1 2 32 10 28–29 Sep 1,010 ±3.1 Ace Research / Newsis 39.0 29.4 4.9 2.9 1.2 3.2 19.3 9.6 28–29 Sep 1,001 ±3.1 KSOI 36.3 37.7 3.7 1.6 1.0 2.6 17.0 1.4 22–23 Sep 1,005 ±3.1 Realmeter / EKN 38.7 39.4 4.0 2.9 1.4 3.3 10.2 0.7 21–22 Sep 1,001 ±3.1 Embrain Public / KBS 35 28 3 2 1 2 29 7 19–21 Sep 2,007 ±2.2 Jowon C&I / Straight News 40.3 37.3 4.2 1.8 0.6 2.1 13.7 3.0 15–20 Sep 1,592 ±2.5 STI / Hankyoreh 44.2 27.5 5.9 4.1 1.2 3.4 13.9 16.7 18–19 Sep 1,003±3.1Flower Research 43.4 36.4 4.9 1.8 1.0 0.9 11.6 7.0 17–18 Sep 1,003 ±3.1 Realmeter / EKN 40.2 38.5 5.2 1.9 0.9 2.4 11.0 1.7 15–17 Sep 1,002 ±3.1 Gallup Korea 40 27 3 3 1 0.1 0.1 1 25 13 14–15 Sep 1,001 ±3.1 KSOI 36.3 33.2 4.3 3.0 1.2 2.8 19.3 3.1 11–12 Sep 1,002±3.1Flower Research 40.1 36.3 4.5 2.4 1.1 1.3 14.2 3.8 10–11 Sep 1,003 ±3.1 Realmeter / EKN 36.1 42.1 4.7 1.3 1.3 2.3 12.2 6.0 8–10 Sep 1,000 ±3.1 Gallup Korea 38 29 2 3 2 0.2 1 26 9 7–9 Sep 1,002 ±3.1 NBS 39 25 3 1 1 1 30 14 4–5 Sep 1,002±3.1Flower Research 42.6 36.1 4.2 1.5 0.6 0.7 14.4 6.5 3–4 Sep 1,001 ±3.1 Realmeter / EKN 41.8 37.6 4.5 2.3 1.3 2.1 10.5 4.2 1–3 Sep 1,001 ±3.1 Gallup Korea 38 30 3 1 1 0.4 0.1 1 25 8 31 Aug–1 Sep 1,000 ±3.1 KSOI 39.3 33.6 3.0 1.7 1.9 2.0 18.5 5.7 28–29 Aug 1,004±3.1Flower Research 45.9 29.5 3.7 2.7 1.3 1.0 15.9 16.4 27–28 Aug 1,006 ±3.1 Realmeter / EKN 43.1 37.7 4.4 2.6 1.4 1.7 9.0 5.4 25–27 Aug 1,001 ±3.1 Gallup Korea 39 25 4 3 1 0.3 2 26 14 24–26 Aug 1,001 ±3.1 NBS 41 20 2 2 1 2 31 21 21–22 Aug 1,007±3.1Flower Research 44.8 33.9 3.5 2.8 1.0 0.6 13.3 10.9 20–21 Aug 1,009 ±3.1 Realmeter / EKN 41.9 37.6 3.9 2.0 2.3 2.5 9.7 4.3 18–20 Aug 1,004 ±3.1 Gallup Korea 41 25 2 2 2 0.2 0.1 1 26 16 18–19 Aug 1,001 ±3.1 KSOI 42.5 32.0 2.7 2.0 1.7 1.2 17.9 10.5 14–15 Aug 1,000±3.1Flower Research 48.2 30.8 2.6 2.1 1.2 0.8 14.4 17.4 13–14 Aug 1,004 ±3.1 Realmeter / EKN 47.9 33.1 2.5 2.2 1.9 2.3 10.1 14.8 11-13 Aug 1,000 ±3.1 Gallup Korea 41 25 2 3 1 0.5 0.1 1 28 16 10–12 Aug 1,001 ±3.1 NBS 40 23 2 2 1 1 29 17 10–11 Aug 1,033 ±3.0 Media Tomato / News Tomato 44.7 30.1 3.9 3.6 2.1 2.2 13.4 14.6 9–10 Aug 1,018 ±3.1 Ace Research / Newsis 45.4'' | 24.9 | 4.0 | 3.0 | 1.4

| 3.3 | 18.0 | style="background:; color:white" | 20.5|- | data-sort-value="2026-8-10" | 8–10 Aug | 2,001 | ±2.2 | Jowon C&I / Straight News | | 46.4| 37.3 | 1.8 | 1.7 | 0.7

| 1.5 | 10.7 | style="background:; color:white" | 9.1|- | data-sort-value="2026-8-8" | 7–8 Aug | 1,002 |±3.1 |Flower Research | | 45.5| 33.8 | 2.5 | 2.8 | 1.5

| 0.9 | 13.0 | style="background:; color:white" | 11.7|- | data-sort-value="2026-8-7" | 6–7 Aug | 1,007 | ±3.1 | Realmeter / EKN | | 44.6| 37.6 | 2.9 | 2.9 | 1.5

| 1.7 | 9.0 | style="background:; color:white" | 7.0|- | data-sort-value="2026-8-4" | 3–4 Aug | 1,037 | ±3.0 | Media Tomato / News Tomato | | 46.2| 31.0 | 3.1 | 2.1 | 2.0

| 3.2 | 12.3 | style="background:; color:white" | 15.2|- | data-sort-value="2026-8-4" | 3–4 Aug | 1,002 | ±3.1 | KSOI | | 41.1| 30.6 | 3.0 | 2.5 | 1.7

| 3.2 | 17.9 | style="background:; color:white" | 10.5|- | data-sort-value="2026-8-1" | 31 Jul–1 Aug | 1,001 |±3.1 |Flower Research | | 47.7| 30.8 | 2.5 | 2.1 | 0.9

| 2.9 | 14.0 | style="background:; color:white" | 16.9|- | data-sort-value="2026-7-31" | 30–31 Jul | 1,002 | ±3.1 | Realmeter / EKN | | 45.1| 37.7 | 2.0 | 2.4 | 0.9

| 2.3 | 9.5 | style="background:; color:white" | 7.4|- | data-sort-value="2026-7-29" | 27–29 Jul | 1,000 | ±3.1 | NBS | | 40| 21 | 2 | 2 | 1

| 1 | 33 | style="background:; color:white" | 19|- | data-sort-value="2026-7-28" | 27–28 Jul | 1,033 | ±3.0 | Media Tomato / News Tomato | | 46.0| 31.3 | 3.5 | 3.0 | 1.4

| 2.4 | 12.3 | style="background:; color:white" | 14.7|- | data-sort-value="2026-7-27" | 25–27 Jul | 2,002 | ±2.2 | Jowon C&I / Straight News | | 46.3| 36.0 | 1.9 | 1.8 | 0.7

| 2.5 | 11.8 | style="background:; color:white" | 10.3|- | data-sort-value="2026-7-25" | 24–25 Jul | 1,000 |±3.1 |Flower Research | | 47.0| 34.6 | 1.6 | 2.5 | 0.9

| 0.8 | 12.6 | style="background:; color:white" | 12.4|- | data-sort-value="2026-7-24" | 23–24 Jul | 1,001 | ±3.1 | Realmeter / EKN | | 41.3| 40.6 | 3.3 | 2.2 | 1.0

| 2.0 | 9.6 | style="background:; color:white" | 0.7|- | data-sort-value="2026-7-23 | 21–23 Jul | 1,003 | ±3.1 | Gallup Korea | | 44| 23 | 2 | 2 | 1 | 0.4 | 0.1 | 1 | 27 | style="background:; color:white" | 21|- | data-sort-value="2026-7-21" | 20–21 Jul | 1,036 | ±3.0 | Media Tomato / News Tomato | | 46.6| 29.0 | 3.7 | 2.9 | 1.5

| 3.1 | 13.3 | style="background:; color:white" | 17.6|- | data-sort-value="2026-7-21" | 20–21 Jul | 1,000 | ±3.1 | KSOI | | 42.9| 30.6 | 1.9 | 3.3 | 1.2

| 2.5 | 17.7 | style="background:; color:white" | 12.3|- | data-sort-value="2026-7-18" | 17–18 Jul | 1,004 |±3.1 |Flower Research | | 49.6| 32.3 | 1.8 | 2.0 | 1.0

| 1.1 | 12.3 | style="background:; color:white" | 17.3|- | data-sort-value="2026-7-16" | 15–16 Jul | 1,005 | ±3.1 | Realmeter / EKN | | 43.1| 40.0 | 3.1 | 2.7 | 1.3

| 1.2 | 8.5 | style="background:; color:white" | 3.1|- | data-sort-value="2026-7-16" | 14–16 Jul | 1,003 | ±3.1 | Gallup Korea | | 40| 26 | 2 | 2 | 1 | 0.1 | 0.2 | 1 | 28 | style="background:; color:white" | 14|- | data-sort-value="2026-7-15" | 13–15 Jul | 1,000 | ±3.1 | NBS | | 38| 22 | 2 | 3 | 2

| 2 | 32 | style="background:; color:white" | 16|- | data-sort-value="2026-7-13" | 11–13 Jul | 2,019 | ±2.2 | Jowon C&I / Straight News | | 44.0| 37.2 | 2.2 | 2.6 | 0.7

| 1.9 | 11.4 | style="background:; color:white" | 6.8|- | data-sort-value="2026-7-11" | 10–11 Jul | 1,004 |±3.1 |Flower Research | | 48.1| 31.8 | 2.4 | 2.3 | 0.9

| 2.1 | 12.4 | style="background:; color:white" | 16.3|- | data-sort-value="2026-7-10" | 9–10 Jul | 1,002 | ±3.1 | Realmeter / EKN | | 44.8| 38.1 | 2.7 | 3.7 | 0.6

| 1.8 | 8.2 | style="background:; color:white" | 6.7|- | data-sort-value="2026-7-9" | 7–9 Jul | 1,002 | ±3.1 | Gallup Korea | | 42| 24 | 3 | 3 | 1 | 1 | 0.1 | 1 | 26 | style="background:; color:white" | 18|- | data-sort-value="2026-7-7" | 6–7 Jul | 1,037 | ±3.0 | Media Tomato / News Tomato | | 41.9| 36.0 | 3.5 | 2.5 | 1.5

| 2.6 | 12.0 | style="background:; color:white" | 5.9|- | data-sort-value="2026-7-7" | 6–7 Jul | 1,002 | ±3.1 | KSOI | | 45.0| 29.1 | 2.7 | 1.6 | 1.9

| 2.3 | 17.5 | style="background:; color:white" | 15.9|- | data-sort-value="2026-7-4" | 3–4 Jul | 1,006 |±3.1 |Flower Research | | 48.7| 31.3 | 3.3 | 2.0 | 1.3

| 1.3 | 12.2 | style="background:; color:white" | 17.4|- | data-sort-value="2026-7-3" | 2–3 Jul | 1,008 | ±3.1 | Realmeter / EKN | | 43.0| 40.3 | 1.9 | 3.0 | 1.6

| 3.7 | 6.5 | style="background:; color:white" | 2.7|- | data-sort-value="2026-7-2" | 30 Jun–2 Jul | 1,005 | ±3.1 | Gallup Korea | | 41| 26 | 2 | 2 | 1 | 1 | | 2 | 25 | style="background:; color:white" | 15|- | data-sort-value="2026-7-1" | 29 Jun–1 Jul | 1,000 | ±3.1 | NBS | | 42| 20 | 2 | 2 | 1

| 1 | 29 | style="background:; color:white" | 22|- | data-sort-value="2026-6-30" | 29-30 Jun | 1,000 | ±3.1 | KIR / Cheonjiilbo | | 41.8| 38.3 | 2.4 | 2.6 | 1.4

| 3.2 | 10.3 | style="background:; color:white" | 3.5|- | data-sort-value="2026-6-29" | 27–29 Jun | 2,000 | ±2.2 | Jowon C&I / Straight News | | 43.4| 38.7 | 2.1 | 2.5 | 1.2

| 2.2 | 9.8 | style="background:; color:white" | 4.7|- | data-sort-value="2026-6-26" | 25–26 Jun | 1,002 | ±3.1 | Realmeter / EKN | 41.0 | | 42.0| 3.7 | 2.8 | 1.5

| 2.1 | 6.9 | style="background:; color:white" | 1.0|- | data-sort-value="2026-6-25" | 23–25 Jun | 1,000 | ±3.1 | Gallup Korea | | 41| 27 | 2 | 4 | 1 | 0.3 | | 1 | 23 | style="background:; color:white" | 14|- | data-sort-value="2026-6-23" | 22–23 Jun | 1,035 | ±3.0 | Media Tomato / News Tomato | 38.1 | | 39.4| 4.2 | 2.9 | 2.2

| 2,2 | 11.0 | style="background:; color:white" | 1.3|- | data-sort-value="2026-6-23" | 22-23 Jun | 1,004 | ±3.1 | KIR / Cheonjiilbo | | 41.4| | 41.4| 3.1 | 2.4 | 0.8

| 2.6 | 8.3 | Tie |- | data-sort-value="2026-6-23" | 22–23 Jun | 1,005 | ±3.1 | KSOI | | 39.6| 37.3 | 1.6 | 2.7 | 1.9

| 1.9 | 15.1 | style="background:; color:white" | 2.3|- | data-sort-value="2026-6-22" | 20–22 Jun | 1,006 | ±3.1 | Hangil Research / Kukinews | | 38.0| 27.4 | 2.7 | 2.7 | 2.1

| 3.4 | 23.6 | style="background:; color:white" | 10.6|- | data-sort-value="2026-6-19" | 18–19 Jun | 1,001 | ±3.1 | Realmeter / EKN | 40.1 | | 42.3| 2.9 | 3.4 | 1.7

| 1.9 | 7.7 | style="background:; color:white" | 2.2|- | data-sort-value="2026-6-16" | 15-16 Jun | 1,029 | ±3.1 | KIR / Cheonjiilbo | | 41.3| 39.4 | 3.4 | 3.6 | 0.9

| 1.6 | 9.7 | style="background:; color:white" | 1.9|- | data-sort-value="2026-6-15" | 13–15 Jun | 2,001 | ±2.2 | Jowon C&I / Straight News | 40.0 | | 41.6| 3.2 | 2.1 | 1.2

| 2.3 | 9.7 | style="background:; color:white" | 1.6|- | data-sort-value="2026-6-13" | 12–13 Jun | 1,003 |±3.1 |Flower Research | | 47.7| 34.4 | 3.2 | 2.0 | 1.5

| 0.4 | 10.7 | style="background:; color:white" | 13.3|- | data-sort-value="2026-6-12" | 11–12 Jun | 1,002 | ±3.1 | Realmeter / EKN | 38.0 | | 44.3| 3.7 | 2.8 | 1.2

| 2.2 | 7.8 | style="background:; color:white" | 6.3|- | data-sort-value="2026-6-11" | 9–11 Jun | 1,002 | ±3.1 | Gallup Korea | | 41| 29 | 2 | 2 | 2 | 0.5 | 0.2 | 2 | 21 | style="background:; color:white" | 12|- | data-sort-value="2026-6-10" | 8–10 Jun | 1,001 | ±3.1 | NBS | | 41| 25 | 2 | 3 | 2

| 2 | 24 | style="background:; color:white" | 16|- | data-sort-value="2026-6-9" | 8–9 Jun | 1,036 | ±3.0 | Media Tomato / News Tomato | | 42.9| 34.7 | 3.5 | 2.7 | 2.0

| 3.7 | 10.3 | style="background:; color:white" | 8.2|- | data-sort-value="2026-6-9" | 8-9 Jun | 1,001 | ±3.1 | KIR / Cheonjiilbo | | 44.3| 37.6 | 2.8 | 2.6 | 0.9

| 2.2 | 9.5 | style="background:; color:white" | 6.7|- | data-sort-value="2026-6-9" | 8–9 Jun | 1,001 | ±3.1 | KSOI | | 38.6| 38.1 | 1.6 | 3.9 | 1.0

| 2.6 | 14.1 | style="background:; color:white" | 0.5|- | data-sort-value="2026-6-8" | 6–8 Jun | 2,000 | ±2.2 | Jowon C&I / Straight News | 40.4 | | 41.6| 2.1 | 1.8 | 1.5

| 3.0 | 9.6 | style="background:; color:white" | 1.2|- | data-sort-value="2026-6-6" | 5–6 Jun | 1,004 |±3.1 |Flower Research | | 50.3| 32.3 | 2.1 | 2.1 | 1.3

| 1.6 | 10.3 | style="background:; color:white" | 18.0|- | data-sort-value="2026-6-5" | 4–5 Jun | 1,004 | ±3.1 | Realmeter / EKN | | 41.8| 41.1 | 2.8 | 2.5 | 1.1

| 3.2 | 7.6 | style="background:; color:white" | 0.7|- | data-sort-value="2026-6-2" | 1-2 Jun | 1,002 | ±3.1 | KIR / Cheonjiilbo | | 45.8| 34.3 | 3.6 | 3.2 | 2.4

| 2.0 | 8.7 | style="background:; color:white" | 11.5|- | data-sort-value="2026-5-27" | 26–27 May | 1,001 | ±3.1 | KSOI | | 43.3| 31.6 | 2.1 | 3.2 | 1.7

| 2.1 | 16.1 | style="background:; color:white" | 11.7|- | data-sort-value="2026-5-25" | 25 May | 1,000 | ±3.1 | KIR / Cheonjiilbo | | 46.6| 32.6 | 3.5 | 2.9 | 2.1

| 3.8 | 8.5 | style="background:; color:white" | 14.0|- | data-sort-value="2026-5-25" | 23–25 May | 2,001 | ±2.2 | Jowon C&I / Straight News | | 44.6| 36.7 | 2.8 | 3.2 | 1.7

| 2.8 | 8.2 | style="background:; color:white" | 7.9|- | data-sort-value="2026-5-23" | 22–23 May | 1,003 |±3.1 |Flower Research | | 54.8| 25.0 | 1.4 | 3.0 | 1.7

| 1.1 | 13.0 | style="background:; color:white" | 29.8|- | data-sort-value="2026-5-22" | 21–22 May | 1,004 | ±3.1 | Realmeter / EKN | | 47.5| 33.3 | 3.4 | 3.2 | 2.3

| 2.5 | 7.6 | style="background:; color:white" | 14.2|- | data-sort-value="2026-5-21" | 19–21 May | 1,002 | ±3.1 | Gallup Korea | | 45| 22 | 2 | 3 | 1 | 0.1 | | 1 | 26 | style="background:; color:white" | 23|- | data-sort-value="2026-5-20" | 18–20 May | 1,001 | ±3.1 | NBS | | 45| 20 | 2 | 2 | 2

| 3 | 26 | style="background:; color:white" | 25|- | data-sort-value="2026-5-19" | 18–19 May | 1,039 | ±3.0 | Media Tomato / News Tomato | | 44.3| 30.3 | 4.3 | 3.3 | 2.1

| 3.7