Frank Scarpitti holds the leading position in the Markham mayoral market due to his incumbency since 2006 and repeated strong re-election results in prior cycles. Nominations closed in late August with only two challengers confirmed alongside him—Martin Ross, whose candidacy stems from a publicized backyard rink dispute with city hall, and Stephen Edgell—creating a limited three-way field. Voter information letters were mailed in early October ahead of the October 16–26 voting window that includes online and in-person options. Trader pricing reflects the structural advantages of incumbency in this municipal contest, though the market leaves room for shifts from unusually high challenger turnout or last-minute developments before results are certified.