78046 is a true toss-up. About 49% of voters here vote Democratic and 51% Republican.
About 38% of adults in 78046 typically vote, below the U.S. average of about 62%. Among adults in 78046, ~19% vote Democratic, ~20% Republican, and ~61% don't vote. The map below shows estimated turnout by block group.
How 78046 compares
Among zip codes within 15 miles, 78046 sits roughly in the middle of the political spectrum, with 3 neighbors leaning further in the place's direction and 1 leaning the other way.
78046 runs about 11 points more Democratic than Texas as a whole.
Politics vary noticeably by block within 78046. The north side runs the most Democratic (D+7) and the southeast side runs the most Republican (R+12), a spread of about 19 points.
Why 78046 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 78046. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 78046, TX sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 78046 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 78046 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 39%, about 14 points below the Texas average of 54%. Low high-school completion lines up with lower turnout, and about 64% of adults in 78046 have completed high school, in the bottom fraction of zip codes. 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.