As of June 2026, Polymarket prices Ken Paxton at ~61% to win the 2026 Texas Senate election outright, with John Cornyn at ~18% and the Democratic nominee at ~12%. The market has traded over $443K in volume — the deepest Texas-specific political contract on the platform. Texas Senate 2026 polls currently confirm a wide Paxton lead in the GOP primary.
The race in 60 seconds
Senator John Cornyn is seeking a fifth term in a Republican party that has moved sharply right of where it was when he last faced primary voters. Texas Attorney General Ken Paxton entered the primary as the early favorite, leveraging deep MAGA support and statewide name recognition. Polymarket has priced Paxton as the most likely winner of the general election outright — not just the primary — since the contract opened. Compare this with our Texas Governor 2026 odds, where Abbott dominates the GOP primary at near-100%.
On the Democratic side, the field is still forming. Polymarket's "Democrat" line aggregates every potential nominee. In a state where Democrats haven't won a Senate race since 1988, the market gives the eventual nominee a high single-digit chance regardless of who they are.
What the market is telling you
- Paxton ~61%: the strongest single-candidate favorite in any 2026 Senate race.
- Cornyn under 20%: a sitting senator priced as a long shot in his own primary is rare and meaningful.
- Democrat ~12%: baseline statewide Democratic ceiling in modern Texas.
- $443K volume: deepest Texas-specific political market on Polymarket. Spreads are tight.
Where to trade it
Two legal venues for Texans — both CFTC-regulated event-contract exchanges, not state-licensed sportsbooks. For the underlying legal context see are prediction markets legal in Texas?
Largest market on this race by an order of magnitude. Tight spreads on the top three outcomes. Operates via its CFTC-regulated US entity.
CFTC-regulated US designated contract market. Smaller volume on Texas-specific races but a cleaner regulatory story for Texans new to event contracts.
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