Incumbent Sen. John Cornyn and Attorney General Ken Paxton head to a May 26 Republican primary runoff after neither secured a March 3 majority, positioning the GOP nominee against Democratic state Rep. James Talarico, who won his primary outright. Trader consensus favors Republicans at 58% implied probability over Democrats at 43%, reflecting Texas' consistent Republican lean in Senate races and Cornyn's incumbency edge, despite late-March polls showing Paxton leading the runoff 46-41 amid stronger base enthusiasm and general election matchups within 2-3 points either way. Recent healthcare endorsements for Cornyn signal momentum, while polling aggregates indicate a tossup; the runoff outcome will clarify the GOP's general election path amid low Democratic historical base rates in the state.
Experimental AI-generated summary referencing Polymarket data · UpdatedTexas Senate Election Winner
Texas Senate Election Winner
$163,024 Vol.
$163,024 Vol.

Republican
58%

Democrat
43%
$163,024 Vol.
$163,024 Vol.

Republican
58%

Democrat
43%
A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.
Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.
The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.
Market Opened: Oct 13, 2025, 4:57 PM ET
Resolver
0x2F5e3684c...A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.
Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.
The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.
Resolver
0x2F5e3684c...Incumbent Sen. John Cornyn and Attorney General Ken Paxton head to a May 26 Republican primary runoff after neither secured a March 3 majority, positioning the GOP nominee against Democratic state Rep. James Talarico, who won his primary outright. Trader consensus favors Republicans at 58% implied probability over Democrats at 43%, reflecting Texas' consistent Republican lean in Senate races and Cornyn's incumbency edge, despite late-March polls showing Paxton leading the runoff 46-41 amid stronger base enthusiasm and general election matchups within 2-3 points either way. Recent healthcare endorsements for Cornyn signal momentum, while polling aggregates indicate a tossup; the runoff outcome will clarify the GOP's general election path amid low Democratic historical base rates in the state.
Experimental AI-generated summary referencing Polymarket data · Updated



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