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Predicts which 2026 Senate contest is decided by the narrowest margin. Resolves to the state whose Senate general election has the smallest winning margin on November 3, 2026. Source: certified state results.
Official announcement or authoritative source
Market open
May 23, 2026, 03:26 p.m.
Market closes
Nov 14, 2026, 02:26 p.m.
Projected payout
After market closes