Glenn Heights leans heavily Democratic by roughly 44 points: about 72% of voters vote Democratic and 28% Republican.
About 60% of adults in Glenn Heights typically vote, near the U.S. average of about 62%. Among adults in Glenn Heights, ~43% vote Democratic, ~17% Republican, and ~40% don't vote. The map below shows estimated turnout by block group.
How Glenn Heights compares
Among cities within 25 miles, Glenn Heights leans more Democratic than 51 of 54 neighbors.
Glenn Heights runs about 58 points more Democratic than Texas as a whole. Texas leans Republican overall, while Glenn Heights is one of the few Democratic-leaning pockets.
Politics vary noticeably by neighborhood within Glenn Heights. The east side runs the most Democratic (D+68) and the southwest side runs the most Republican (R+3), a spread of about 71 points.
Why Glenn Heights leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Glenn Heights, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 60% of residents in Glenn Heights live in densely developed areas, about 23 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 35% of adults in Glenn Heights have never been married, above 88% of cities. Glenn Heights runs against the grain of Texas, a Democratic-leaning pocket in a Republican-leaning state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Glenn Heights, TX sits in the top tenth nationally on this measure.
Why turnout in Glenn Heights looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Glenn Heights is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Oak Leaf, TX R+14
- Ovilla, TX R+22
- DeSoto, TX D+64
- Red Oak, TX R+12
- Lancaster, TX D+61
- Cedar Hill, TX D+49
- Pecan Hill, TX R+44
- Duncanville, TX D+34
- Midlothian, TX R+42
- Waxahachie, TX R+30
Cities with Similar Populations
- Douglassville, PA R+15
- Horsham, PA D+12
- Liberty, SC R+66
- Gardendale, AL R+43
- Vandalia, OH R+27
- Carriere, MS R+76
- El Reno, OK R+34
- Northborough, MA D+24
- Fredericksburg, TX R+50
- Blytheville, AR D+22
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.