Texas Republican Senate Primary Winner

Platform comparison

Active sub-markets

Market context

The immediate event is the Texas Republican Senate primary runoff, due to be decided on 26 May, with the party’s nominee to face the November general election. The runoff is between incumbent Senator John Cornyn and Attorney General Ken Paxton after neither cleared 50% in the March primary; Cornyn finished narrowly ahead in the first round, but Paxton has since gained momentum after Donald Trump endorsed him on 19 May, according to reporting cited by Wikipedia and the Texas coverage in recent days. In prediction-market terms, that makes the current price a read on turnout composition as much as on overall party preference.

Comparable primary runoffs in large, partisan states often hinge on late coalition shifts rather than the first-round margin alone. Cornyn’s argument is institutional strength and broader acceptability, while Paxton’s is stronger alignment with the hard-right primary electorate; Wesley Hunt’s earlier third-place showing suggests some anti-establishment vote existed, but it did not consolidate enough to displace the top two. For traders, the key reference point is that the market resolves to the party’s nominee, not the November winner, so a narrow but clean runoff result matters more than general-election dynamics.

The main catalysts are the Texas Republican Party’s official runoff result, turnout data, and any credible pre-runoff polling or endorsement headlines in the final week. Because the settlement window ends on 26 May, late reporting on early voting and Election Day participation could move the market quickly if it points to one side’s base turning out more reliably. From a legal-access angle, this sort of event is typically easier to reach where no-KYC is available up to about $1,500, but users in Germany should note that GlüStV restrictions can affect local access, and US CFTC jurisdiction is relevant to how event contracts are treated, even where the market is offered offshore.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.