About This Market
SharePolymarket, Kalshi, and PredictIt are tracking the Montana Senate winner for the upcoming election on November 3, 2026. The outcome will influence the balance of power in the Senate, making it a focal point for both state and national political strategies.
Republican leads the “Montana Senate winner” event at 77.2% implied probability, followed by Democrat at 8.5%. A 2.0% cross-platform spread signals an active arbitrage window.


