Helm

TX-21 House forecast

Safe Rep2026 lines

Polls close . Districtwide at 7:00 PM local time

Teixeira 95% chance

  • Kristin Hook (D)-1% past 7 days4%
  • Mark Teixeira (R)+1% past 7 days95%

Chance over time

  • Hook4%
  • Teixeira95%

Chance over time, past month: Hook from 6% to 4%; Teixeira from 94% to 95%.

Chance over time, past month, weekly
DateHookTeixeira
Sep 22, 20266%94%
Sep 29, 20266%94%
Oct 7, 20266%92%
Oct 14, 20264%96%
Oct 21, 20264%95%

Projected margin

Most likely Teixeira by 5–10 · 8 in 10: Teixeira +21.3 to Teixeira +5.5

Margin forecast from public sources, collected by Helm's data infrastructure
Projected margin of victory
MarginChance
Teixeira by 30+5%
Teixeira by 25–30<1%
Teixeira by 20–257%
Teixeira by 15–2016%
Teixeira by 10–1532%
Teixeira by 5–1034%
Teixeira by 0–55%
Hook wins1%

Helm simulation

Not among the districts that most often decide House control in the simulation.

Call this race in your scenario

Context

  • New lines for 2026: the current TX-21 member was elected on different lines.

More in Texas

37 more House districts

News and signals

House
92% DEM
Senate
65% DEM