Incumbent Elizabeth Roy maintains a dominant position in trader pricing for the Whitby, Ontario mayoral race ahead of the October 26, 2026 municipal election. As the sitting mayor since 2022 with prior council and school board experience, she benefits from high name recognition and a record of advancing infrastructure projects, business investment, and completion of most items in the town's strategic plan. Her primary challenger, Regional Councillor Chris Leahy, has positioned himself as an alternative amid ongoing council divisions and past code-of-conduct issues, yet trails substantially in market-implied probabilities. A third certified candidate, Harshini Rajmohan, registers negligible support. Recent campaign launches, candidate certification in August, and scheduled debates have not shifted the consensus, which reflects Roy's incumbency edge and established local profile entering the final month before voting.