78363 is a true toss-up. About 48% of voters here vote Democratic and 52% Republican.
About 54% of adults in 78363 typically vote, below the U.S. average of about 62%. Among adults in 78363, ~26% vote Democratic, ~28% Republican, and ~46% don't vote. The map below shows estimated turnout by block group.
How 78363 compares
Among zip codes within 15 miles, 78363 is the least Republican-leaning.
78363 runs about 9 points more Democratic than Texas as a whole.
Politics vary noticeably by block within 78363. The north side runs the most Democratic (D+9) and the southwest side runs the most Republican (R+25), a spread of about 35 points.
Why 78363 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 78363. The lean here lands roughly where demographic data alone would predict.
Never-married share, developed land, and voter turnout
Places that combine a never-married-heavy adult population and a heavily developed built environment tend to turn out at a lower rate, as 78363, TX does.
Why turnout in 78363 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 78363 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 47%, about 7 points below the Texas average of 54%. Renters vote less often than owners, and about 47% of households in 78363 rent, compared to around 31% in nearby zip codes. Low high-school completion lines up with lower turnout, and about 85% of adults in 78363 have completed high school, below 82% 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.