On the 24th, the first poll released after the parties confirmed their candidates for the June 3 local elections for Seoul mayor showed Democratic Party of Korea candidate Chong Won-o leading People Power Party candidate Oh Se-hoon by more than 10 percentage points. The so-called "support the administration" response rate also came in 9 percentage points higher than the "judge the administration" view.
In a poll commissioned by CBS to the Korea Society Opinion Institute (KSOI) of 1,001 Seoul residents aged 18 and older on the 22nd-23rd, 45.6% said they support Chong, while 35.4% said they support Oh. The gap between the two candidates is 10.2 percentage points. Those who "support another person" were 7%, "have no preferred candidate" 7%, and "don't know" 5%.
In this local election, 46.6% said "we should choose a ruling-bloc candidate to give strength to the government," while 37.2% said "we should choose an opposition candidate to judge the government." The "support the administration" view is 9.4 percentage points higher than the "judge the administration" view. In the Seoul district mayor races, "choose the Democratic Party candidate (43.2%)" outnumbered "choose the People Power Party candidate (31.7%)" by 11.5 percentage points.
In a survey commissioned by Straight News to Jowon C&I of 802 Seoul residents aged 18 and older on the 20th-21st, Chong's support was 49.7%, and Oh's was 35.9%. The gap between the two candidates is 13.8 percentage points. "No preferred candidate" was 8.8%, and "don't know" was 5.6%.
By region, in the northeastern area of Seoul (Gangbuk, Dobong, Nowon, Seongbuk, Dongdaemun, Jungnang, Seongdong, and Gwangjin districts), Chong led with 54.2%, ahead of Oh (32.0%) by 22.2 percentage points. In the southwestern area (Gangseo, Yangcheon, Yeongdeungpo, Dongjak, Guro, Geumcheon, and Gwanak districts), Chong (48.9%) and Oh (35.7%) showed a 12.2 percentage point gap. In the northwestern area (Eunpyeong, Jongno, Seodaemun, Jung, Mapo, and Yongsan districts) and the southeastern area (Seocho, Gangnam, Songpa, and Gangdong districts), Chong and Oh each showed a 7.4 percentage point difference.
By age, the gap widened in the 50s, with 62.3% for Chong and 24.2% for Oh (a 38.1 percentage point gap). Among those in their teens and 20s, Oh led with 47.5% to Chong's 29.6%. In addition, among those in their 30s, Chong 50.4% and Oh 37.3%; in their 40s, Chong 53.3% and Oh 34.0%; in their 60s, Chong 52.9% and Oh 34.5%; and among those 70 and older, Chong 49.5% and Oh 38.5%.
The CBS-KSOI poll was conducted via wireless ARS using virtual mobile numbers provided by a third party. The response rate was 5.1%. The margin of error was ±3.1 percentage points at a 95% confidence level. The Straight News–Jowon C&I poll was conducted via wireless ARS using virtual mobile numbers. The response rate was 6.3%. The margin of error was ±3.5 percentage points at a 95% confidence level. For details, refer to the National Election Survey Deliberation Commission website.