37188 leans heavily Republican by roughly 48 points: about 26% of voters vote Democratic and 74% Republican.
About 79% of adults in 37188 typically vote, above the U.S. average of about 62%. Among adults in 37188, ~21% vote Democratic, ~58% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How 37188 compares
Among zip codes within 15 miles, 37188 leans more Republican than 5 of 10 neighbors.
37188 runs about 19 points more Republican than Tennessee as a whole.
Politics vary noticeably by block within 37188. The southeast side is the most Republican-leaning (R+54) and the northeast side is the least Republican-leaning (R+41), a spread of about 13 points.
Why 37188 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 37188. The lean here lands roughly where demographic data alone would predict.
Adult tooth loss and voter turnout
Places with a low adult tooth-loss rate tend to turn out at a higher rate; 37188, TN sits below the national average on this measure. Tooth loss does not drive turnout; it reflects age, income, and healthcare access.
Why turnout in 37188 looks the way it does
Turnout in 37188 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 Zip Codes
Zip Codes with Similar Populations
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.