Edison leans heavily Democratic by roughly 36 points: about 68% of voters vote Democratic and 32% Republican.
About 38% of adults in Edison typically vote, below the U.S. average of about 62%. Among adults in Edison, ~26% vote Democratic, ~12% Republican, and ~62% don't vote. The map below shows estimated turnout by block group.
How Edison compares
Among neighborhoods within 5 miles, Edison leans more Democratic than 19 of 35 neighbors.
Edison runs about 49 points more Democratic than Texas as a whole. Texas leans Republican overall, while Edison is one of the few Democratic-leaning pockets.
Why Edison 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 Edison, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in Edison live in densely developed areas, about 64 points above the U.S. average of 36%. Edison runs against the grain of Texas, a Democratic-leaning pocket in a Republican-leaning state.
High-school completion, developed land, and voter turnout
Places that combine low high-school-completion share and a heavily developed built environment tend to turn out at a lower rate, as Edison, San Antonio, TX does.
Why turnout in Edison looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Edison 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 46%, about 8 points below the Texas average of 54%. High-crime urban areas turn out at lower rates, and Edison sits in the top 15% on a violent-crime measure. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Northwest Los Angeles Heights, San Antonio, TX D+32
- Beacon Hill, San Antonio, TX D+43
- Monte Vista, San Antonio, TX D+51
- Los Angeles Heights-Keystone, San Antonio, TX D+36
- Jefferson, San Antonio, TX D+36
- Tobin Hill, San Antonio, TX D+40
- Jefferson-Woodlawn Lake, San Antonio, TX D+36
- Woodlawn Lake, San Antonio, TX D+37
- Shearer Hills-Ridgeview, San Antonio, TX D+20
- Mahncke Park, San Antonio, TX D+33
Neighborhoods with Similar Populations
- Hopecrest, Morgantown, WV D+26
- Sunnyheights, Pueblo, CO D+5
- Laddie Place and North Wilson, San Antonio, TX D+30
- Pioneer, Butte, MT D+5
- Woodmere, Jacksonville, FL R+6
- Laurelwood, Albuquerque, NM D+18
- Painted Meadows, Santa Fe, TX R+29
- Downtown Fostoria, Fostoria, OH R+15
- Sunset, Boise, ID D+44
- Wester, Lubbock, TX R+11
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.