Recent CNN polling in Iowa shows Republican Ashley Hinson leading Democrat Josh Turek by just two points among likely voters, with nearly 30% undecided in a state Trump carried by double digits in 2024. This razor-thin contest in a structurally challenging environment for Democrats has positioned the race as a leading candidate for the narrowest Senate margin on November 3. In Maine, Republican incumbent Susan Collins faces Democrat Troy Jackson in a toss-up rated by multiple forecasters, with recent surveys from Marist, CBS/YouGov, and others showing margins of four points or less in either direction. Traders assign Iowa a modest edge at 55% for the closest outcome, reflecting its red-state dynamics and fresh evidence of a genuine dead heat compared with Maine’s polling volatility.