About This Market
SharePolymarket and Kalshi are tracking the House popular vote margin of victory for the 2026 Midterms. This event is crucial as it will influence the balance of power in Congress and shape legislative priorities for the following years.
Democrats 8-10% leads the “2026 2026 Midterms: House popular vote margin of victory? (Generic ballot)” event at 21.5% implied probability. Other contenders include Democrats 6-8% (14.8%), Democrats 10-12% (13.8%), Democrats 4-6% (13.5%), and Democrats 14-16% (7.0%). A 4.3% cross-platform spread signals an active arbitrage window.

