2026 PREVIEW: Mayra Flores ditches Cuellar to run against Gonzalez after Texas redistricting boosts odds. “Flores announced in April that she was running to challenge Cuellar in the 28th District after losing twice over the last few cycles to Gonzalez in the 34th District, where she briefly served as congresswoman. But Flores has changed her plans after Texas redrew its congressional maps, adding five GOP congressional seats and widening Republican margins in existing districts.”