About This Market
SharePolymarket and Kalshi are tracking the winner of the CA-21 House race set for November 3, 2026. This election will play a crucial role in shaping the balance of power in the House of Representatives, influencing legislative agendas and party strategies.
Democratic Party leads the “CA-21 House winner” event at 87.0% implied probability, followed by Republican Party at 13.5%. A 3.0% cross-platform spread signals an active arbitrage window.

