Incumbent Mat Siscoe’s registration for re-election and his 2022 victory with roughly 69 percent of the vote establish him as the dominant figure in the St. Catharines mayoral race. Nominations closed on August 21, finalizing a field that includes challengers Ann-Marie Zammit, Anthony A. Adeoye, Jimmy Jackson, and Henry Bosch, none of whom bring prior municipal office experience or comparable public profile. The October 26 election remains two months away, leaving limited time for lesser-known candidates to close visibility gaps. Trader pricing aligns with this structural advantage for the sitting mayor while assigning modest probabilities to the remaining contenders.