Recent midterm polling and prediction markets show Democrats favored to flip Senate control in November 2026, creating uncertainty over which party will hold the minority. Republicans currently lead 53-47 under Majority Leader John Thune, who won the post in late 2024 amid internal competition from figures like Rick Scott. If Democrats gain the majority, their caucus could retain Chuck Schumer or turn to alternatives such as Patty Murray or Brian Schatz; a GOP minority would likely feature Thune or challengers including John Barrasso, Tom Cotton, or Rick Scott. Traders price the outcome near even across many names because chamber control remains fluid, with key battlegrounds like Alaska, Maine, and Michigan still competitive and no confirmed leadership votes scheduled until after the election. Late shifts in voter turnout or candidate performance could quickly separate frontrunners.