Trader consensus favors Democratic Party challenger Chun Jae-soo at 52% over incumbent People Power Party Mayor Park Heong-joon at 46.5% for the June 3 Busan mayoral election, mirroring recent polls showing a neck-and-neck race with Chun leading narrowly amid undecided voters. In this traditional conservative Yeongnam battleground, Park's incumbency and development record provide a strong base, but Chun has gained traction through party momentum and appeals to unaffiliated swing voters disillusioned with national politics. Gaps have narrowed in surveys over the past week, including response-rate variations, as candidate registrations opened today. Final-week campaign intensity, conservative consolidation, voter turnout in key districts, and any gaffes could tip the closely contested outcome.