Recent polling averages show a statistical tie between incumbent Republican Susan Collins and Democratic challenger Troy Jackson in Maine’s U.S. Senate race, with results fluctuating within margins of error across surveys from late September into early October. Jackson holds advantages among younger voters and certain base groups, while Collins maintains stronger support among older voters, white voters without college degrees, and swing voters according to an AARP survey. Four October debates remain key upcoming events that could shift momentum ahead of the November 3 election. Polymarket traders assign Jackson a clearer lead than most polling aggregates, reflecting the wisdom of crowds on factors such as Democratic turnout potential and Collins’s long record in a state where past polls have underestimated her performance.