Southlake leans Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 88% of adults in Southlake typically vote, above the U.S. average of about 62%. Among adults in Southlake, ~31% vote Democratic, ~57% Republican, and ~12% don't vote. The map below shows estimated turnout by block group.
How Southlake compares
Among cities within 25 miles, Southlake leans more Republican than 55 of 79 neighbors.
Southlake runs about 15 points more Republican than Texas as a whole.
Politics vary noticeably by neighborhood within Southlake. The northwest side is the most Republican-leaning (R+38) and the east side is the least Republican-leaning (R+20), a spread of about 19 points.
Why Southlake 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 Southlake, not a ranked or complete list of what matters most.
Southlake votes Republican even though it is densely developed (about 86%, far above the Texas average of 35%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 92% of households in Southlake are family households, in the top fraction of cities.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as Southlake, TX does.
Why turnout in Southlake looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Southlake is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 72%, about 12 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 93% of households in Southlake own their home, compared to around 77% in nearby cities. High high-school completion lines up with higher turnout, and about 98% of adults in Southlake have completed high school, above 96% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Westlake, TX R+43
- Grapevine, TX R+12
- Colleyville, TX R+31
- Trophy Club, TX R+32
- Roanoke, TX R+27
- Keller, TX R+20
- North Richland Hills, TX R+21
- Bedford, TX R+6
- Flower Mound, TX R+16
- Watauga, TX R+20
Cities with Similar Populations
- Helena, MT D+17
- Dakota Ridge, CO D+9
- East Wenatchee, WA R+24
- Ephrata, PA R+29
- Foothill Farms, CA D+2
- Garden City, KS R+18
- Sand Springs, OK R+33
- Banning, CA R+4
- Lady Lake, FL R+28
- Baldwinsville, NY D+4
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.