Democrats enter the final weeks of the 2026 midterms as favorites to regain Senate control, according to polling averages and prediction markets, which has elevated Chuck Schumer’s implied probability as the current minority leader seeking another term. John Thune, the sitting Republican majority leader, retains solid internal backing and has publicly confirmed plans to run again, yet a potential GOP loss would shift the contest to the minority side. Brian Schatz and other Democratic senators trail with single-digit shares amid broad caucus support for Schumer and no active challenges. Key upcoming factors include the outcomes of competitive races in states such as North Carolina, Georgia, and Texas, which will determine majority status and trigger post-election leadership votes in both conferences.