Thursday, October 15, 2026
B.C. votes in 9 days

Texas’s 37th District

U.S. House · TX-37

Election day November 3, 2026 · forecast of October 15, 2026

Our forecast gives the Democrats a more than 99% chance of winning, with an average lead of 66.9 points.

Safe seat. Chance of a final gap under 5 points: under 1%.

Projected vote share

Projection by party

  • Democrat 83.5%

    Greg Casar

  • Republican 16.6%

    Lauren B. Peña

Thin vertical mark: 2024 result.

Compared with the average

Democrat Republican
TX-37 83.5%16.6%
National averageUnited States 54.5%+28.9 44.2%−27.7

Simple average of the 435 districts, not weighted by population.

Projection track

How the projection has moved

Current member

Doggett, Lloyd · Democrat

Primary results

Held May 26, 2026 · Official source

Democratic primary Greg Casar 80.7% 105,917 votes
Republican primary Lauren B. Peña 58.2% 6,567 votes

Who's running

The candidates

Candidates for the upcoming election.

  • Democrat Open seat

    Greg Casar

    source
  • Republican Open seat

    Lauren B. PeÑA

    source

Previous election (2024)

The Democrats won by 41.1 points.

Our current projection: the Democrats ahead by 66.9 points.

Where these voters came from

This district was redrawn in the 2025-2026 redistricting. Share of its voters from each former district:

  • Former district 35 60%
  • Former district 37 40%

Nearby districts

Party ahead and how sure the projection is.

  • TX-31 Republican, safe seat
  • TX-35 Republican, toss-up
  • TX-20 Democrat, safe seat
  • TX-21 Republican, competitive
  • TX-17 Republican, safe seat
  • TX-27 Republican, competitive

Watch list

The tightest races

The smallest projected gaps between the top two.

  1. AZ-2Republican52%5.7-point gap
  2. KY-6Republican53%5.8-point gap
  3. VA-1Republican58%5.8-point gap
Forecast updated