Texas Republican Senate Primary Winner

Platform comparison

Active sub-markets

Market context

Texas Republicans will choose their Senate nominee in a runoff on 26 May, with incumbent John Cornyn facing Attorney General Ken Paxton after neither cleared 50% in the first round. In the primary, Cornyn led narrowly on the first count while Paxton stayed close behind and Wesley Hunt finished a distant third, leaving the race to a straight head-to-head contest. For traders, the key comparison is with other Texas runoffs where endorsements, turnout shape and late consolidation mattered more than first-round plurality margins; in a low-turnout Republican electorate, a small shift in core conservatives can overturn an early lead.

The main catalyst now is whether Paxton can convert anti-establishment strength into runoff turnout, or whether Cornyn’s money, organisational edge and broader statewide support can hold. The Texas Tribune reported in late February that the contest had already absorbed more than $95 million, underscoring how fully nationalised the race has become. Polling and late campaign-finance disclosures are the variables to watch, along with any final endorsements or joint appearances before voting closes. Aggregators such as 270toWin showed a tight race in mid-2025 polling, but the market is likely to lean most heavily on any new runoff-specific surveys and the first credible result call from Texas Republicans.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Texas Republican Senate Primary Winner across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. PolyGram routes every trade through to Polymarket — at 0% fees.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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 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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.