Candidates Oh Se-hoon and Jung Won-oh are locked in a tight race for the mayoral seat as of June 4, 2026 [1].

The narrow gap between the candidates indicates a deeply divided electorate. The outcome will determine the administrative direction of South Korea's capital city and serve as a bellwether for national political sentiment.

Oh Se-hoon, representing the People Power Party, and Jung Won-oh, representing the Democratic Party of Korea, have seen their polling numbers fluctuate in a series of shifts [1]. The competition is described as a "dead heat," with neither candidate able to secure a definitive lead as the campaign progresses [1].

Political analysts are monitoring the volatility of the support rates. Because the margin is so thin, small shifts in voter turnout or late-deciding voters could pivot the result toward either party [1].

Both campaigns have intensified their efforts to capture the undecided vote. The current state of the race suggests that the final result will depend on the candidates' ability to mobilize their bases in the final stages of the contest [1].

The competition is described as a "dead heat."

The razor-thin margin between the People Power Party and the Democratic Party of Korea reflects a broader trend of political polarization in South Korea. A result in such a close race often depends on voter mobilization strategies rather than shifts in policy preference, meaning the winner will likely be the candidate who most effectively drives their supporters to the polls.