Texas Congressional District 18

Voters

Registered Voters: 444,788
Active Voters: 405,895 (91.3%)

Party Registration

This state's voter file does not record party registration.

Turnout by Cycle

Cycle	General	Democratic Primary	Republican Primary
2023–2024	242,262 (54.5%)	55,001 (12.4%)	11,934 (2.7%)
2021–2022	166,979 (37.5%)	52,734 (11.9%)	10,283 (2.3%)
2019–2020	239,314 (53.8%)	73,214 (16.5%)	9,738 (2.2%)
2017–2018	173,567 (39.0%)	43,419 (9.8%)	7,436 (1.7%)
2015–2016	178,274 (40.1%)	55,906 (12.6%)	14,750 (3.3%)
2013–2014	93,881 (21.1%)	16,012 (3.6%)	5,676 (1.3%)
2011–2012	150,939 (33.9%)	23,868 (5.4%)	6,408 (1.4%)

Turnout counts today's registered voters with a counted ballot in the cycle's elections (the odd and even year), as a share of today's registered voters. Voters who have since left the rolls are not counted.

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Source: Civitech voter file snapshot as of 08/14/2025. These are registered voters, separate from the Census population figures. Counts under 10 are suppressed and shown as "<10".

Demographics

Total Citizen Population: 660,222
Citizen Voting Age Population (CVAP): 475,511

Citizen Population by Race/Ethnicity

Group	Citizens	Share
Non-Hispanic	419,567	63.5%
Hispanic	240,653	36.5%
White	127,374	19.3%
Black	242,631	36.7%
Asian	30,288	4.6%
American Indian / Alaska Native	1,029	0.2%
Native Hawaiian / Pacific Islander	476	0.1%
Two or More Races	4,300	0.7%

Citizen Voting Age Population by Race/Ethnicity

Group	CVAP	Share
Non-Hispanic	330,615	69.5%
Hispanic	144,894	30.5%
White	110,150	23.2%
Black	188,062	39.5%
Asian	27,398	5.8%
American Indian / Alaska Native	3,572	0.8%
Native Hawaiian / Pacific Islander	325	0.1%
Two or More Races	2,210	0.5%

Source: Redistricting Data Hub / U.S. Census Bureau CVAP Special Tabulation.