Texas Senate GOP Race Tightens as Trump Skips Key Endorsement Deadline
President Donald Trump let a key deadline move with out endorsing both incumbent Sen. John Cornyn or Texas Attorney General Ken Paxton within the lead-up to the Texas GOP Senate major runoff May 26.
March 17 was the deadline for candidates to withdraw from the race. Cornyn and Paxton superior from the preliminary March 3 primary election, the place Cornyn topped the record at roughly 35% and Paxton second at about 30%, forcing the runoff underneath Texas guidelines requiring 50% to win.
Trump had pledged after the first to again a candidate and urge the opposite to give up, however held off. Prediction markets reacted immediately to the information, with quantity spiking as merchants wager on endorsement fallout and assault advert escalations.
The race has been private and traditionally costly, according to the New York Times, as the pair vie to tackle Democratic upstart Texas State Rep. James Talarico in November.
Kalshi and Polymarket each favor Cornyn
Polymarket‘s Texas Republican Senate Primary Winner market is a well-liked election market with $12.2 million whole quantity. Cornyn is presently sitting at 62%, with $2.6 million in quantity, whereas Paxton’s clocking at 39% on $3.8 million in quantity.
Kalshi‘s associated Texas Senate GOP markets are nearing $11 million, with direct runoff odds almost mirroring Polymarket at 60% Cornyn, 40% Paxton.

Platforms align on Cornyn’s incumbency edge and powerful fundraising. But Paxton’s Trump-base pull retains it tight. Prior to March 3, polls largely had Paxton edging out Cornyn by roughly 4%.
Where do Texas major markets go from right here?
The markets appear to be pricing Cornyn’s common power regardless of Paxton’s MAGA base fireplace. If Trump stays silent, cash will seemingly proceed a gradual grind to Cornyn, however a late endorsement may flip the market quick.
On Polymarket’s runoff margin of victory market, essentially the most‑traded final result stays “Cornyn 3–6%,” however pricing on narrower Cornyn wins and Paxton squeakers tightened as the no‑endorsement information broke, reinforcing the view of a razor‑skinny race fairly than a blowout. Kalshi’s margin of victory market has low quantity up to now, however Cornyn by 0-5% has the very best odds up to now.

For now, the sign is much less about who wins than how shut will probably be. Prediction markets are converging on a high‑turnout, single‑digit contest that neither candidate can lock up and not using a late break in information or a Trump endorsement.
Regardless of who wins between Cornyn and Paxton, the Texas Senate winner market, with $1.7 million in quantity, has the Republican candidate at 57% over Talarico. That comes as Public Policy Polling is monitoring Talarico as a slight favourite over both Republican candidate.
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