Akashic
1892–2024
Akashic
Texas 20th Congressional District
presidential margin
2008D+32.72012D+37.12016D+40.22020D+40.52024D+28.5
full record · 2008 → 2024
D+28.5
2024
median income$66,622U.S. $80,734 · TX $78,476
median age33.2U.S. 39.1 · TX 35.7
poverty rate17.2%U.S. 12.5% · TX 13.8%
bachelor’s+ (25+)31.8%U.S. 35.6% · TX 33.6%
non-english37.0%U.S. 22.3% · TX 35.2%
race · ethnicity · ancestry
Mexican57.2%
Puerto Rican2.0%
Spaniard0.9%
German11.7%
English8.6%
Irish7.4%
African American†8.7%
African0.7%
Asian Indian0.8%
Filipino0.7%
Chinese0.4%
religion

Religious adherence is published only at the county level (U.S. Religion Census). See Bexar County.

American Community Survey 2024 5-year (income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024.

Texas 20th Congressional District

Akashic
2024 presidential electionTexas 20th Congressional DistrictHarrisD+28.5
Texas 20th Congressional District premium atlas map: Harris D+28.5, 279 precincts, 1 city labels.
2024
279 precincts by 2024 margin · 1 city, own margin · ◎ bluest & reddest city
presidential history
Presidential margin, 2008–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 2008 to 2024. Most recent: +28.5% in 2024.+28.5%DR20082024
Presidential margin over time
YearMargin (D minus R)
2008+32.7%
2012+37.1%
2016+40.2%
2020+40.5%
2024+28.5%
DemocraticRepublican
current representation
Current officeholders
DJoaquin CastroU.S. House · TX-20-0.40
RJohn CornynU.S. Senate+0.47
RTed CruzU.S. Senate+0.78

Federal officeholders only. State and local officeholders are planned for the next data pass.

Source · Voteview HSall_members.csv.
Congressional elections · 25 House races · 17 Senate races

U.S. House

Each result reflects the U.S. House district as it was drawn for that election; redistricting has redrawn these lines over time, so they can differ from the current 120th-Congress district shown on the map above.

Source · MIT Election Lab (MEDSL), House. CC-BY 4.0.
YearDistrictWonDemocraticRepublicanTotal
202420D
100.0%157,890
0.0%0
157,890
202220D
68.4%115,352
31.6%53,226
168,599
202020D
64.7%175,078
33.1%89,628
270,723
201820D
80.9%139,038
0.0%0
171,963
201620D
79.7%149,640
0.0%0
187,669
201420D
75.7%66,554
0.0%0
87,964
201220D
63.9%119,032
33.5%62,376
186,177
201020D
63.6%58,645
34.4%31,757
92,185
200820D
71.9%127,298
25.2%44,585
177,055
200620D
87.4%68,348
0.0%0
78,245
200420D
65.5%112,480
32.0%54,976
171,804
200220D
100.0%68,685
0.0%0
68,685
200020D
87.7%107,487
0.0%0
122,574
199820D
63.2%50,356
35.6%28,347
79,713
199620D
63.7%88,190
34.4%47,616
138,409
199420D
62.5%60,114
37.5%36,035
96,149
199220D
100.0%103,755
0.0%0
103,755
199020D
100.0%56,318
0.0%0
56,318
198820D
70.7%94,527
27.5%36,801
133,696
198620D
100.0%55,363
0.0%0
55,363
198420D
100.0%100,443
0.0%0
100,443
198220D
91.5%68,544
0.0%0
74,924
198020D
81.9%84,113
17.3%17,725
102,685
197820D
100.0%51,584
0.0%0
51,584
197620D
100.0%90,173
0.0%0
90,173

U.S. Senate

Source · MIT Election Lab (MEDSL), Senate. CC-BY 4.0.
YearWonDemocraticRepublicanTotal
2024R
44.6%5,031,249
53.1%5,990,741
11,291,854
2020R
43.9%4,888,764
53.5%5,962,983
11,144,040
2018R
48.3%4,045,632
50.9%4,260,553
8,371,655
2014R
34.4%1,597,387
61.6%2,861,531
4,647,370
2012R
40.6%3,194,927
56.5%4,440,137
7,864,822
2008R
42.8%3,389,365
54.8%4,337,469
7,912,075
2006R
36.0%1,555,202
61.7%2,661,789
4,314,663
2002R
43.3%1,955,758
55.3%2,496,243
4,512,590
2000R
32.3%2,025,024
65.1%4,078,954
6,267,964
1996R
43.9%2,428,776
54.8%3,027,680
5,527,441
1994R
38.3%1,639,615
60.8%2,604,218
4,279,940
1990R
37.4%1,429,986
60.2%2,302,357
3,821,432
1988D
59.2%3,149,806
40.0%2,129,228
5,323,023
1984R
41.4%2,202,557
58.5%3,111,348
5,314,178
1982D
58.6%1,818,223
40.5%1,256,759
3,103,040
1978R
49.3%1,139,149
49.8%1,151,376
2,312,540
1976D
56.8%2,199,956
42.2%1,636,370
3,874,230

TX-20 covers the heart of San Antonio and returned an 18.6-point Democratic margin in 2024, reflecting a majority-Hispanic electorate concentrated in one of Texas's largest urban cores.

Across the recorded series it reached a Democratic high of 40.5 points in 2020. Between 2020 and 2024 the district moved 12.0 points toward the Republican candidate; the 2024 margin was 28.5 points.

A population of 766,967, a 39% non-Hispanic-white share, and a median household income of $66,622 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 29 and Congressional District 7.

Political twins — districts

The congressional districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.

Congressional District 29
Texas
93.2twin score
% Latino2012–2020 trajectory≠ African American ancestry
Congressional District 7
Arizona
91.3twin score
% Latino2016–2024 trajectory
Congressional District 33
Texas
90.7twin score
2012–2024 trajectory≠ Mexican ancestry

Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.

Compare two places, side by side

Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →

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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Texas 20th Congressional District. Akashic. https://akashic.app/cd/4820/. Accessed May 20, 2026. License: CC BY 4.0.
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Places within Texas 20th Congressional District

counties it covers1
Bexar County

Frequently asked questions

How did Texas 20th Congressional District vote in 2024?
In 2024, Texas 20th Congressional District voted Democratic by 28.5 points (D+28.5), carried by the Democratic candidate. Out of 225,762 votes cast, 143,725 went Democratic and 79,322 went Republican.
How many people live in Texas 20th Congressional District?
Texas 20th Congressional District has a population of 766,967 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Texas 20th Congressional District?
Median household income in Texas 20th Congressional District is $66,622 — below the national median of $80,734. The Texas state median is $78,476.
What is the political history of Texas 20th Congressional District?
Akashic tracks 5 presidential elections in Texas 20th Congressional District from 2008 to 2024. Of those, 5 went Democratic and 0 went Republican.