The 2026 U.S. midterm elections will determine which party holds control of the Senate for the next two years. Currently trading at 45% odds for a Republican majority, this market reflects real-time expectations about Senate control. Historically, the party occupying the White House often faces headwinds in midterm elections, though outcomes vary significantly based on economic conditions, voter approval ratings, and turnout dynamics. The Senate has 100 seats, and a party needs 51 for control. The outcome becomes clear on November 3, 2026, when all races are decided and certified by the states. At 45%, the market implies Democrats are given higher probability of maintaining control, while Republicans remain competitive. This price reflects trader sentiment about which party will emerge with a majority. The odds trajectory provides insight into how polling movements, economic data, approval ratings, and other political developments shift market expectations about Senate control. Traders use this market to gain exposure to election outcomes.