Sweeny is a Republican stronghold. About 24% of voters here vote Democratic and 76% Republican.
About 73% of adults in Sweeny typically vote, above the U.S. average of about 62%. Among adults in Sweeny, ~17% vote Democratic, ~56% Republican, and ~27% don't vote. The map below shows estimated turnout by block group.
How Sweeny compares
Among cities within 25 miles, Sweeny leans more Republican than 24 of 39 neighbors.
Sweeny runs about 38 points more Republican than Texas as a whole.
Politics vary noticeably by neighborhood within Sweeny. The northeast side is the most Republican-leaning (R+69) and the south side is the least Republican-leaning (R+35), a spread of about 34 points.
Why Sweeny leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Sweeny, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 85% of residents in Sweeny drive to work alone, about 11 points above the U.S. average of 74%.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Sweeny, TX sits in the top quarter nationally on this measure.
Why turnout in Sweeny looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Sweeny is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Wild Peach Village, TX R+57
- Cedar Lane, TX R+50
- West Columbia, TX R+49
- Old Brazoria, TX R+60
- Old Ocean, TX R+22
- Brazoria, TX R+51
- Sugar Valley, TX R+44
- Cedar Lake, TX R+59
- Jones Creek, TX R+56
- Van Vleck, TX R+37
Cities with Similar Populations
- Chickasaw, AL D+6
- Crestline, OH R+50
- Marcy, NY R+26
- Jonesboro, LA R+26
- Pasadena Hills, FL R+23
- Oxford, FL R+39
- Freeburg, IL R+36
- Poolesville, MD D+12
- Kingston, GA R+69
- Ramseur, NC R+51
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Sources and methodology
Precinct-level voting records used to fit the model come from Texas Secretary of State, Elections Division, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.