Will the Republicans win the Texas Senate race in 2026?

Logged 29 Oct 2026, 19:00 UTC

• The only direct evidence is a Texas Southern University poll (Oct 21-25) showing Democrat Talarico leading Republican Paxton 49-47 among likely voters five days out; treated as signal, this makes the Democrat a slight polling favorite, which pushes Republican win probability below 50%.
• A single poll with a 2-point margin and 1% undecided is well within polling error, so this is an anchor, not a distribution; the race is best read as near-coin-flip on the polling evidence alone.
• Texas structural context pulls the other way: Republicans have won every Texas U.S. Senate race since 1993 and every statewide race since 1994, and Paxton is the Republican nominee in a midterm with a Libertarian drawing 3%, which historically correlates with modest Republican overperformance relative to polls in Texas (e.g., Cruz outpolling in 2018/2024). This is general knowledge, not from retrieved facts.
• The presence of a Libertarian at 3% and the fact that Texas has no Senate runoff under this contract's terms beyond the general election (settlement includes any runoffs, but Texas Senate races are plurality) means the 49-47 margin likely maps closely to the final outcome.
• Weighing one fresh likely-voter poll against Texas's strong red baseline, I land slightly below even money on the Republican, treating the poll as real but discounting it for house effects, single-poll noise, and Texas polling history.

What would change it: A subsequent multi-poll average (e.g., from established pollsters) showing Paxton tied or ahead, or evidence the TSU poll is an outlier, would move me toward the Texas Republican baseline of roughly 0.60-0.65.

+5.2 probability points from the market at generation · low confidence · Polymarket

Base rate: In close U.S. Senate races, the candidate leading by a small margin (2-3 points) in final-week likely-voter polling has historically gone on to win roughly 60-65% of the time, since such leads are within typical polling error; this is stated from general knowledge of the class, as no retrieved fact carries the rate.

Chosen by Crossbook's published selection rule (auto-v2), not by hand.

Formed blind at 42.0%, without sight of the price; published at 36.8%, the market’s 31.5% moved 50% of the way toward it by fixed rule. None of the cited facts could be shown to be one the market had not already priced. That check is recorded, not enforced.