- Will Jim Lee win the 2026 Oshawa mayoral election?43¢
- Will Michael Coons win the 2026 Oshawa mayoral election?<1¢
- Will Derek Giberson win the 2026 Oshawa mayoral election?7¢
- Will Henry Onwuachu win the 2026 Oshawa mayoral election?<1¢
- Will Tito-Dante Marimpietri win the 2026 Oshawa mayoral election?55¢
- Will Dave Westlake win the 2026 Oshawa mayoral election?<1¢
The 2026 Oshawa, Ontario mayoral election is currently scheduled to be held on October 26, 2026. This market will resolve according to the candidate who becomes the next mayor of Oshawa, Ontario as a result of this election. Temporary, interim, or placeholder mayors appointed before the election will not be considered. If the result of this election isn't known by June 30, 2027, 11:59 PM ET, the market will resolve to "Other". The primary resolution source for this market will be a consensus of credible reporting; however, if there is any ambiguity in the results, this market will resolve according to official information from Oshawa, Ontario.
The open mayoral seat after incumbent Dan Carter opted not to run has produced a crowded field of nine candidates following nominations closing on August 21, with sitting councillors Tito-Dante Marimpietri, Jim Lee, and Derek Giberson among the early and most visible entrants alongside first-time and lesser-known challengers. This fragmentation, combined with the absence of public polling to clarify voter preferences on local priorities such as downtown revitalization, housing growth, affordability, and public safety, has kept probabilities tightly clustered near even odds for the main contenders and the residual category. The election on October 26 will hinge on turnout among distinct local voting blocs and any late campaign differentiation on council experience versus calls for change.