Mayes Middleton secured the Republican nomination after defeating U.S. Rep. Chip Roy in the May 2026 runoff, while Nathan Johnson advanced on the Democratic side following his primary runoff victory. Texas's long-standing Republican advantage in statewide contests for this open seat, previously held by Ken Paxton, underpins trader consensus favoring Middleton at 76.5%. Recent polling from early September showed Middleton ahead by roughly five points with high undecideds, and handicappers rate the contest Likely Republican. Johnson has emphasized restoring office credibility and consumer protections, while Middleton highlights border enforcement, election integrity measures, and alignment with conservative priorities. Early voting begins October 19 ahead of the November 3 general election, with limited recent shifts in the race dynamics.