Mission San Jose, San Antonio, TX Political Map | Democrat & Republican Areas in Mission San Jose

By the BestNeighborhood data science team. Last updated May 2026.

Mission San Jose leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.

 

About 38% of adults in Mission San Jose typically vote, below the U.S. average of about 62%. Among adults in Mission San Jose, ~24% vote Democratic, ~14% Republican, and ~62% don't vote. The map below shows estimated turnout by block group.

How Mission San Jose compares

Among neighborhoods within 5 miles, Mission San Jose leans more Democratic than 7 of 26 neighbors.

Mission San Jose runs about 42 points more Democratic than Texas as a whole. Texas leans Republican overall, while Mission San Jose is one of the few Democratic-leaning pockets.

Why Mission San Jose leans the way it does

This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Mission San Jose, not a ranked or complete list of what matters most.

Mission San Jose votes against the grain of Texas. Texas leans Republican overall, while Mission San Jose runs about 42 points more Democratic.

Cancer-screening access and voter turnout

Places with low colon-cancer-screening access tend to turn out at a lower rate; Mission San Jose, San Antonio, 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 Mission San Jose looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Mission San Jose 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 36%, about 17 points below the Texas average of 54%. Low high-school completion lines up with lower turnout, and about 63% of adults in Mission San Jose have completed high school, below 97% of neighborhoods. High-crime urban areas turn out at lower rates, and Mission San Jose sits in the top 15% on a violent-crime measure. Learn more about the findings and methodology on the political spectrum map.

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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.