Will Republicans win the U.S. Senate in 2026?
Prediction markets currently give a 50% probability that Will Republicans win the U.S. Senate in 2026?. This contract trades at 50¢ on Kalshi, closing February 1, 2027. Republicans are priced at a significant discount to their current Senate control, with the market implying only a 46% probability of GOP retention despite their current majority.
Analysis
Republicans are priced at a significant discount to their current Senate control, with the market implying only a 46% probability of GOP retention despite their current majority. The Yes side's 153.5% annualized yield is notably elevated relative to the 102.8% No yield, suggesting the market may be pricing in meaningful Democratic gains in 2026, though the narrow 1¢ spread and $1M+ open interest indicate reasonable liquidity for a long-dated political contract. The 5-point price decline over the past week (50¢ to 45¢) warrants monitoring as it could signal shifting sentiment toward Democratic Senate control, though with 291 days to expiry and neutral regime conditions, the market remains relatively stable.
Also on polymarket at 47¢(Δ +3¢)
Resolution rules
If the Republican Party has won control of the U.S. Senate in 2026, then the market resolves to Yes.
Indicators
Regime
Trade
sf trade CONTROLS-2026-R yes 100