Tito-Dante Marimpietri and Jim Lee lead a crowded field of nine registered candidates for the October 26 Oshawa mayoral election, with the race remaining close due to three sitting councillors splitting voter support for experienced local leadership after Mayor Dan Carter’s retirement. Marimpietri, the first to declare and a long-serving regional councillor, benefits from an early organizational edge and emphasis on housing development and downtown revitalization. Lee, a retired firefighter elected to council in 2022, has gained traction by highlighting public safety, affordability, and opposition to catch-and-release policies. Derek Giberson trails as a distant third, while the broader field fragments the vote. An October 8 candidates debate offers the next clear opportunity for separation ahead of election day.