Isom is a Republican stronghold. About 16% of voters here vote Democratic and 84% Republican.
About 63% of adults in Isom typically vote, near the U.S. average of about 62%. Among adults in Isom, ~10% vote Democratic, ~53% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.
How Isom compares
Among cities within 25 miles, Isom leans more Republican than 39 of 63 neighbors.
Isom runs about 39 points more Republican than Tennessee as a whole.
Why Isom 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 Isom, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 13% of adults in Isom hold a bachelor's degree, about 9 points below the Tennessee average of 22%.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; Isom, TN sits in the bottom tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Isom looks the way it does
Turnout in Isom sits close to the national pattern. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Hampshire, TN R+65
- Mount Joy, TN R+69
- Sunrise, TN R+66
- Swan Bluff, TN R+66
- Duck River, TN R+65
- Fikes Mill, TN R+67
- Mount Pleasant, TN R+52
- Williamsport, TN R+64
- Kimmins, TN R+68
- Sandy Hook, TN R+68
Cities with Similar Populations
- Herald, VA R+68
- Magnolia, AL D+15
- Butteville, OR R+35
- Moxahala, OH R+57
- St. Helena, NE R+71
- White Oak Junction, KY R+86
- Pemberton, OH R+72
- Mount Meigs, AL D+10
- Waltz, MI R+31
- Sanford, PA R+56
All Local Stats
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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.