Oh Se-hoon secured re-election as Seoul mayor in the June 3, 2026, local elections, defeating Democratic Party challenger Chong Won-o by a narrow margin after early counts showed the ruling-party candidate ahead. The incumbent from the conservative People Power Party benefited from strong turnout in key districts and a late swing in vote tallies that reversed initial projections. This outcome reflects voter preference for maintaining checks and balances against the Democratic administration of President Lee Jae-myung, which won most other metropolitan races nationwide. With the result now confirmed by near-complete counts, trader consensus at 100 percent for Oh aligns with the official tally, though formal certification or any rare procedural challenges could still influence final resolution timing.