Which party will win the Senate in 2026?

Which party will win the Senate in 2026? is a U.S. election prediction market focused on which party will control the Senate after the November 3, 2026 Senate elections. The forecast is about final chamber control, not individual races: a party wins if it holds more than half of voting Senate members, or if the Senate is split and the Vice Presidency provides the tie-breaking majority. If control remains unclear after Election Day, the market stays open until the Senate selects its Majority Leader, and the result will follow that leader’s party affiliation. Current market sentiment puts the probability around 46.5%, reflecting a closely contested outlook. Traders are watching the 2026 U.S. midterms, Senate control, and certification of official results as the key inputs for the expected outcome. The event sits in the Elections category and is relevant to U.S. politics, Congress, and broader election forecasting.