Frank Scarpitti maintains a 93% implied probability in the Markham mayoral market due to his long incumbency since 2006, repeated strong re-election margins including 64% in 2022, and a 71% approval rating in recent polling. Nominations closed in late August 2026 with only two challengers confirmed—Martin Ross, whose candidacy stems from a prior backyard rink dispute, and Stephen Edgell—creating a limited field ahead of the October 16–26 vote. Scarpitti’s recent public role as grand marshal at the Ontario Honda Dealers Indy and support for provincial housing and business measures have sustained his visibility. A late scandal, health event, or unusually strong challenger mobilization could still alter the outcome before election day.