**TX-09 features Republican nominee Alex Mealer, an Army veteran and Trump-endorsed candidate who won the May 2026 GOP runoff, against Democrat Leticia Gutierrez, who prevailed in the March Democratic primary.** The district, redrawn in mid-decade redistricting to combine portions of prior Houston-area seats, carries an R+9 Partisan Voter Index and supported Trump by roughly 20 points in 2024, shifting it from deep Democratic territory to a Republican-leaning open seat. Recent September 2026 polling shows Mealer ahead by single digits (for example, 45-39 in one survey with 16% undecided), while ratings from Cook Political Report and others classify the race as Likely Republican. Broader 2026 national dynamics, including Democratic hopes in Texas amid mixed Trump favorability readings, have kept the implied margin competitive rather than a blowout. Limited Democratic fundraising and outside spending relative to Republican efforts further anchor expectations around a modest GOP edge. The market’s tight distribution across Republican margin buckets reflects uncertainty over turnout among Hispanic and swing voters in Harris and Liberty counties, with late-cycle developments such as additional polling, campaign spending surges, or national tailwinds the most likely factors that could widen or narrow the final spread before November 3.