Atsumi Harasawa leads trader pricing in the October 18 Yokohama mayoral contest because multiple major parties, including the LDP’s Kanagawa chapter, Komeito city assembly members, the Democratic Party for the People, and Japan Innovation Party, have endorsed the 59-year-old lawyer as the candidate best positioned to restore public trust in city hall. The race opened after former mayor Takeharu Yamanaka resigned in early September following a third-party investigation that confirmed multiple instances of power harassment against senior officials. Yamanaka’s subsequent decision to run again has kept the contest centered on whether voters will accept his return or turn to an alternative with stronger institutional backing. Other declared candidates, including former lawmaker Kazuma Nakatani (backed by the Constitutional Democratic Party), Yuka Asaka (Japanese Communist Party), and Atsushi Fukuyama (Sanseito), remain at lower implied probabilities consistent with narrower or more partisan support bases. Early voting began October 5 with more than three million registered voters, and the short campaign period leaves limited time for late shifts before ballots close.