Democrats’ recapture of the Senate majority in the November 2026 midterms positions incumbent Democratic leader Chuck Schumer to serve as majority leader for the 120th Congress, with traders assigning him an 89.5 percent implied probability. Party caucus elections, expected in December, will confirm the outcome through a secret ballot among Democratic senators. Recent post-election discussions among incoming members have introduced modest uncertainty, as several newly elected Democrats have withheld immediate support for Schumer or signaled openness to alternatives, lifting Chris Van Hollen to 9.7 percent. Van Hollen has described himself as in “active listening mode” without launching a formal challenge, while other names such as Brian Schatz remain at 1.5 percent or lower. No comparable developments have altered the negligible probabilities assigned to Republican senators, whose conference faces its own internal leadership vote amid the shift to minority status.