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Texas's 20th Congressional District

The current officeholder, the 2024 result, and a precinct-level model you can run yourself — built from how Texas actually voted.

Model Texas's 20th Congressional District →

Texas's 20th Congressional District — highlighted within Texas's U.S. House districts · 2024: D+100.0 · open the interactive map →

Current officeholder

Joaquin Castro Democratic

2024 result

Democratic D+100.0

2024 votes cast

157,890

Office

U.S. House

Who lives in this district

This district is home to about 784,135 people, median age 32.7, median household income $61,570.

Population

784,135

Median age

32.7

Median household income

$61,570

Bachelor's degree or higher

25.1%

Race & ethnicity: White 17.5% · Black 6.1% · Hispanic 70.6% · Asian 3.7%

Source: U.S. Census Bureau, 2019–2023 American Community Survey (5-year).

Precinct results — 2024 general

236 precincts reported in Texas's 20th Congressional District's 2024 general election. The twenty largest:

Precinct Winner Margin Votes
48029-152125 Democratic D+100.0 1,895
48029-151129 Democratic D+100.0 1,826
48029-151141 Democratic D+100.0 1,712
48029-152154 Democratic D+100.0 1,706
48029-151151 Democratic D+100.0 1,660
48029-153036 Democratic D+100.0 1,607
48029-152068 Democratic D+100.0 1,571
48029-152088 Democratic D+100.0 1,554
48029-152170 Democratic D+100.0 1,541
48029-153149 Democratic D+100.0 1,530
48029-153058 Democratic D+100.0 1,489
48029-151143 Democratic D+100.0 1,461
48029-151073 Democratic D+100.0 1,429
48029-152086 Democratic D+100.0 1,407
48029-151111 Democratic D+100.0 1,405
48029-153146 Democratic D+100.0 1,387
48029-151121 Democratic D+100.0 1,381
48029-153129 Democratic D+100.0 1,372
48029-151110 Democratic D+100.0 1,352
48029-152107 Democratic D+100.0 1,352

All 236 precincts are modelable — open the race in the simulator and drill to precinct grain.

Find your district

Enter a ZIP code or a district (e.g. NC-4) to find your U.S. House district and who represents it.

Model Texas's 20th Congressional District in five steps

  1. Set the candidates. Name the contenders for the Texas's 20th Congressional District (or keep the generic Democrat / Republican defaults). The map starts from the canonical mixed-grain 2024 presidential baseline.
  2. Apply a swing. Move vote share statewide, or by demographic cohort, with a slider. The map and the running tally recompute instantly.
  3. Model turnout. Mobilize or depress turnout for any group — turnout and persuasion are modeled separately, the way a real campaign thinks about them.
  4. Explore local geography. Zoom from the state through counties to the finest supported reporting grain and adjust the places available in the model.
  5. Roll up & share. Roll the result up to chamber control, then share the exact versioned scenario.

Open Texas's 20th Congressional District in the simulator →

Frequently asked

Who represents Texas's 20th Congressional District?
Joaquin Castro (Democratic) currently holds this U.S. House seat.
What was the 2024 result in Texas's 20th Congressional District?
D+100.0 — 157,890 Democratic, 0 Republican, of 157,890 votes cast.
Can I model this race myself?
Yes — open it in the electionsmcp simulator and model vote-share swing and turnout from the real 2024 baseline, down to the precinct, then roll it up to chamber control.

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