Brandon Herrera holds the lead in trader consensus for the open Texas 23rd congressional seat due to his strong Republican primary performance against former incumbent Tony Gonzales, who resigned earlier in 2026 after a personal scandal, combined with a substantial fundraising advantage exceeding $1.9 million compared to Katy Padilla Stout's roughly $485,000. The large border district stretching from San Antonio to El Paso has leaned Republican in recent cycles, though ratings from outlets like the Cook Political Report classify it as Likely Republican amid limited public polling showing a narrow gap. Recent developments include a October 13 debate between the candidates, increased Democratic advertising spending targeting working-class voters, and Herrera's reported internal surveys indicating a wider margin, with early voting set to begin October 19 ahead of the November 3 election.