78943 leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 51% of adults in 78943 typically vote, below the U.S. average of about 62%. Among adults in 78943, ~13% vote Democratic, ~38% Republican, and ~49% don't vote. The map below shows estimated turnout by block group.
How 78943 compares
Among zip codes within 15 miles, 78943 leans more Republican than 1 of 8 neighbors.
78943 runs about 34 points more Republican than Texas as a whole.
Why 78943 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 78943, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 95% of residents in 78943 drive to work alone, about 21 points above the U.S. average of 74%. A high family-household share predicts Republican voting, and about 89% of households in 78943 are family households, in the top fraction of zip codes.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; 78943, TX sits in the bottom tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 78943 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 78943 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 49%, about 5 points below the Texas average of 54%. 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.