78957 leans heavily Republican by roughly 46 points: about 27% of voters vote Democratic and 73% Republican.
About 70% of adults in 78957 typically vote, above the U.S. average of about 62%. Among adults in 78957, ~19% vote Democratic, ~51% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How 78957 compares
Among zip codes within 15 miles, 78957 leans more Republican than 1 of 5 neighbors.
78957 runs about 32 points more Republican than Texas as a whole.
Politics vary noticeably by block within 78957. The northeast side is the most Republican-leaning (R+60) and the south side is the least Republican-leaning (R+11), a spread of about 49 points.
Why 78957 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 78957. The lean here lands roughly where demographic data alone would predict.
Non-English at home and voter turnout
Places with a low non-English-at-home share tend to turn out at a higher rate; 78957, TX sits below the national average on this measure.
Why turnout in 78957 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 78957 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 Zip Codes
Zip Codes with Similar Populations
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.