Helm

TX-13 House forecast

Safe Rep2026 lines

Polls close . Districtwide at 7:00 PM local time

Jackson 97% chance

  • Mark Nair (D)+1% past 7 days2%
  • Ronny Jackson (R)0% past 7 days97%

Chance over time

  • Nair2%
  • Jackson97%

Chance over time, past month: Nair from 5% to 2%; Jackson from 95% to 97%.

Chance over time, past month, weekly
DateNairJackson
Sep 22, 20265%95%
Sep 29, 20265%95%
Oct 6, 20265%95%
Oct 14, 20262%98%
Oct 21, 20262%97%

Projected margin

Most likely Jackson by 40–45 · 8 in 10: Jackson +44.5 to Jackson +24.8

Margin forecast from public sources, collected by Helm's data infrastructure
Projected margin of victory
MarginChance
Jackson by 55+4%
Jackson by 50–55<1%
Jackson by 45–503%
Jackson by 40–4527%
Jackson by 35–4027%
Jackson by 30–3514%
Jackson by 25–3016%
Jackson by 15–259%
Jackson by 0–151%
Nair wins<1%

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-13 member was elected on different lines.

More in Texas

37 more House districts

News and signals

House
92% DEM
Senate
65% DEM