James Talarico holds a 70.5% implied probability of winning Collin County in the 2026 Texas Senate race, well ahead of Ken Paxton at 22.5%, reflecting suburban voter shifts in this fast-growing Dallas-area county. Recent statewide polls, including a Trafalgar survey from early October showing Talarico ahead by roughly three points and a YouGov poll with a similar margin, have highlighted Democratic strength among independents, women, and younger voters. High-profile endorsements, including President Trump’s support for Paxton and celebrity backing for Talarico, combined with record advertising spending exceeding $440 million, have kept the contest tight overall but appear to favor Democrats in competitive suburbs like Collin County. Minor candidates and write-ins register at lower trader consensus levels.