The Texas U.S. Senate race in Denton County remains closely contested because the suburban Dallas area combines a Republican base with growing numbers of moderate and independent voters responsive to economic messaging. Ken Paxton secured strong primary support there after defeating incumbent John Cornyn, aided by a Trump endorsement, while James Talarico consolidated Democratic backing and is running competitively statewide on affordability and turnout-focused appeals. Heavy outside spending exceeding $150 million has funded negative ads from both campaigns in recent weeks, keeping margins narrow. Recent polling aggregates show the overall contest within a few points, and Denton County's mix of early voting patterns plus high third-party and write-in options on the ballot sustains uncertainty about final separation among contenders.