Summertown is a Republican stronghold. About 13% of voters here vote Democratic and 87% Republican.
About 64% of adults in Summertown typically vote, near the U.S. average of about 62%. Among adults in Summertown, ~8% vote Democratic, ~56% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How Summertown compares
Among cities within 25 miles, Summertown leans more Republican than 58 of 66 neighbors.
Summertown runs about 45 points more Republican than Tennessee as a whole.
Why Summertown 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 Summertown, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In Summertown, about 95% of residents are non-Hispanic white, about 22 points above the U.S. average of 72%; about 15% of adults hold a bachelor's degree, about 7 points below the Tennessee average of 22%. A high family-household share predicts Republican voting, and about 77% of households in Summertown are family households, above 82% of cities.
Park access and Republican lean
Places with low park coverage tend to lean Republican; Summertown, TN sits below the national average on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Summertown looks the way it does
Turnout in Summertown sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Rockdale, TN R+71
- Henryville, TN R+75
- Three Oaks, TN R+76
- Ethridge, TN R+74
- Sandy Hook, TN R+68
- Napier, TN R+74
- Mount Joy, TN R+69
- Screamer, TN R+70
- Mount Pleasant, TN R+52
- Flatwoods, TN R+74
Cities with Similar Populations
- Lake Norman of Catawba, NC R+40
- Balm, FL R+28
- Pearisburg, VA R+58
- Union Bridge, MD R+39
- Lawrenceville, VA D+36
- Terrell Hills, TX R+9
- Peru, NY R+12
- Brusly, LA R+17
- Colfax, NC R+7
- Zephyrhills South, FL R+31
Sources and methodology
Precinct-level voting records used to fit the model come from Tennessee Secretary of State, Division of Elections, 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.