Neptune is a Republican stronghold. About 14% of voters here vote Democratic and 86% Republican.
About 81% of adults in Neptune typically vote, above the U.S. average of about 62%. Among adults in Neptune, ~11% vote Democratic, ~70% Republican, and ~19% don't vote. The map below shows estimated turnout by block group.
How Neptune compares
Among cities within 25 miles, Neptune leans more Republican than 50 of 90 neighbors.
Neptune runs about 61 points more Republican than Ohio as a whole.
Why Neptune 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 Neptune, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 91% of residents in Neptune drive to work alone, about 17 points above the U.S. average of 74%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Neptune, OH sits above the national average on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Neptune looks the way it does
Areas with high high-school completion turn out at higher rates. About 98% of adults in Neptune have completed high school, about 7 points above the Ohio average of 91%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Celina, OH R+53
- Erastus, OH R+58
- Villa Nova, OH R+56
- Mendon, OH R+68
- St. Marys, OH R+54
- Mercer, OH R+72
- Tama, OH R+73
- Monticello, OH R+73
- Montezuma, OH R+64
- Glynwood, OH R+72
Cities with Similar Populations
- Bombay, NY R+26
- Nelson, WI R+31
- Birchleaf, VA R+68
- Village Mills, TX R+84
- Machpelah, NC R+42
- Middle River, MN R+42
- Smith, NV R+53
- Talisheek, LA R+67
- Tilsit, MO R+68
- Sparks, TX R+72
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Sources and methodology
Precinct-level voting records used to fit the model come from Ohio Secretary of State, 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.