Port Royal leans heavily Republican by roughly 50 points: about 25% of voters vote Democratic and 75% Republican.
About 76% of adults in Port Royal typically vote, above the U.S. average of about 62%. Among adults in Port Royal, ~19% vote Democratic, ~57% Republican, and ~24% don't vote. The map below shows estimated turnout by block group.
How Port Royal compares
Among cities within 25 miles, Port Royal leans more Republican than 7 of 68 neighbors.
Port Royal runs about 20 points more Republican than Tennessee as a whole.
Politics vary noticeably by neighborhood within Port Royal. The northeast side is the most Republican-leaning (R+68) and the northwest side is the least Republican-leaning (R+29), a spread of about 39 points.
Why Port Royal 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 Port Royal, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 81% of households in Port Royal are family households, about 14 points above the U.S. average of 67%.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; Port Royal, TN sits in the top quarter nationally on this measure.
Why turnout in Port Royal looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Port Royal 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 68%, about 8 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Port Royal have completed high school, above 86% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Adams, TN R+56
- Sadlersville, TN R+54
- Stroudsville, TN R+68
- Hampton Station, TN R+30
- Turnersville, TN R+64
- Guthrie, KY R+37
- Cedar Hill, TN R+65
- Henrietta, TN R+60
- Clarksville, TN R+11
- Salem, TN R+53
Cities with Similar Populations
- Rawlings, MD R+60
- Dortches, NC R+17
- Dennis, TX R+77
- Union Mills, IN R+44
- Eastgate, TX R+62
- Mears, MI R+22
- Meshoppen, PA R+54
- Cleveland, MN R+36
- Groveland, IL R+34
- Salem, SD R+51
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.