THE BLOCK · 2026-11-03 18:30 UTC

Prediction markets bet on Democratic sweep of House, Senate in midterm elections

Polymarket users assigned 76% probability to Democrats winning the Senate and 94% to winning the House in midterm elections as of Tuesday. Prediction markets gained prominence during the 2024 presidential election as an alternative to traditional polling, but interest in election-related trading has declined significantly since then.

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