Several 2026 Senate contests currently poll within or near a 1-point margin, including Ohio, Texas, Alaska, and Maine, where recent surveys show Democratic and Republican candidates separated by fractions of a point. Cook Political Report shifted Iowa and Texas into toss-up territory this month amid broader polling that gives Democrats a national generic-ballot edge. Factors influencing these races include the composition of the 35 seats up for election, Republican retirements in competitive states such as North Carolina, candidate recruitment and primary outcomes, and voter assessments of the presidential administration’s record. Additional late-cycle polls, campaign spending patterns, and turnout dynamics in battleground states will determine which margins ultimately fall inside the 1% threshold on Election Night.