Frank Scarpitti’s commanding 92.7% market position stems from his two-decade incumbency as Markham’s longest-serving mayor, continuous council service since 1985, and consistent re-election margins, most recently 64% in 2022. With nominations closed in August 2026, the certified three-candidate field pits him against first-time challengers Martin Ross and Stephen Edgell, neither of whom has mounted a visible campaign capable of shifting voter blocs in this fast-growing GTA municipality. Traders price the outcome as settled ahead of online and in-person voting October 16–26, reflecting Scarpitti’s established record on fiscal management, infrastructure, and regional transit. Late developments such as his recent advocacy on provincial mental health policy have not altered the consensus. A realistic challenge would require an unforeseen scandal, health event, or turnout surge favoring opponents, none of which has materialized in current reporting.