Helm

TX-20 House forecast

Safe Dem2026 lines

Polls close . Districtwide at 7:00 PM local time

Castro 97% chance

  • Joaquin Castro (D)0% past 7 days97%
  • Edgardo Rafael Baez (R)+1% past 7 days3%

Chance over time

  • Castro97%
  • Baez3%

Chance over time, past month: Castro from 95% to 97%; Baez from 6% to 3%.

Chance over time, past month, weekly
DateCastroBaez
Sep 22, 202696%3%
Sep 29, 202698%2%
Oct 6, 202695%5%
Oct 14, 202696%3%
Oct 21, 202697%3%

Projected margin

Most likely Castro by 40–45 · 8 in 10: Castro +34.4 to Castro +52

Margin forecast from public sources, collected by Helm's data infrastructure
Projected margin of victory
MarginChance
Baez wins<1%
Castro by 0–151%
Castro by 15–251%
Castro by 25–301%
Castro by 30–359%
Castro by 35–4022%
Castro by 40–4527%
Castro by 45–5025%
Castro by 50–5512%
Castro by 55+3%

Helm simulation

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

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Context

  • New lines for 2026: the current TX-20 member was elected on different lines.

More in Texas

37 more House districts

News and signals

House
92% DEM
Senate
65% DEM