77590 is a true toss-up. About 48% of voters here vote Democratic and 52% Republican.
About 50% of adults in 77590 typically vote, below the U.S. average of about 62%. Among adults in 77590, ~24% vote Democratic, ~26% Republican, and ~50% don't vote. The map below shows estimated turnout by block group.
How 77590 compares
Among zip codes within 15 miles, 77590 leans more Republican than 5 of 14 neighbors.
77590 runs about 10 points more Democratic than Texas as a whole.
Politics vary noticeably by block within 77590. The southeast side runs the most Democratic (D+49) and the north side runs the most Republican (R+23), a spread of about 73 points.
Why 77590 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 77590. 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; 77590, TX sits in the bottom quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 77590 looks the way it does
Areas with limited routine healthcare access turn out at lower rates. 77590 is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The uninsured rate here is about 20%, about 10 points above the U.S. average of 10%. Renters vote less often than owners, and about 44% of households in 77590 rent, about 19 points above the U.S. average of 25%. 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.