Dennison is a Republican stronghold. About 24% of voters here vote Democratic and 76% Republican.
About 75% of adults in Dennison typically vote, above the U.S. average of about 62%. Among adults in Dennison, ~18% vote Democratic, ~57% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How Dennison compares
Among cities within 25 miles, Dennison leans more Republican than 13 of 95 neighbors.
Dennison runs about 42 points more Republican than Ohio as a whole.
Politics vary noticeably by neighborhood within Dennison. The northeast side is the most Republican-leaning (R+61) and the west side is the least Republican-leaning (R+45), a spread of about 17 points.
Why Dennison 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 Dennison, not a ranked or complete list of what matters most.
Dennison votes Republican even though it is densely developed (about 38%, above 83% of cities). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high white share with below-average college attainment predicts Republican voting, and Dennison fits that profile on both counts.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Dennison, OH sits in the top quarter nationally on this measure.
Why turnout in Dennison looks the way it does
Turnout in Dennison 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
- Uhrichsville, OH R+48
- Midvale, OH R+57
- Barnhill, OH R+58
- Tuscarawas, OH R+55
- Newport, OH R+60
- Roswell, OH R+60
- Riverside Park, OH R+52
- Gnadenhutten, OH R+58
- New Hagerstown, OH R+59
- Bowerston, OH R+59
Cities with Similar Populations
- South Blooming Grove, NY R+46
- Jericho, VT D+22
- Beloit, KS R+53
- Pinon, AZ D+58
- Partlow, VA R+45
- Knox, PA R+55
- West Lake Hills, TX D+11
- Northwood, NH R+8
- Tohatchi, NM D+51
- New Ellenton, SC R+21
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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.