Attorney General Ken Paxton’s historic primary upset has reshaped the Texas political environment as the 2026 general election season formally begins. Following Paxton’s definitive May 26 runoff victory over incumbent Senator John Cornyn, Democratic nominee James Talarico has seen his election forecasting metrics plunge. Talarico’s odds of winning the Texas Senate race dropped to 40% on the prediction market Kalshi on Thursday, while Paxton’s odds surged to a 60% probability.
Trading volume on Kalshi’s live prediction market has accelerated rapidly, nearing $4 million as of Thursday evening. This recent market movement presents a sharp contrast to traditional voter surveys conducted earlier in the spring. According to an April 2026 survey by the University of Texas Politics Project, Talarico previously held an 8-point advantage over Paxton (42% to 34%) in a hypothetical matchup prior to the primary runoff.
The fluctuation in Talarico’s forecasting metrics coincides with a highly publicized public conflict. Deputy White House Chief of Staff Stephen Miller recently initiated a hostile social media exchange by making unverified claims regarding Talarico’s gender identity. The official Democratic Party X account retaliated directly with a profanity-laced dismissal of Miller, according to a detailed report by Forbes outlining the escalating campaign tensions.
Talarico had briefly crossed the 50% probability threshold on May 19 after Donald Trump formally endorsed Paxton in the Republican primary. However, Paxton’s ultimate victory over Cornyn has successfully consolidated the betting market in the Attorney General’s favor as the two candidates transition into a direct head-to-head campaign.