Harrison County is a Republican stronghold. About 22% of voters here vote Democratic and 78% Republican.
About 72% of adults in Harrison County typically vote, above the U.S. average of about 62%. Among adults in Harrison County, ~16% vote Democratic, ~56% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Harrison County compares
Among counties within 50 miles, Harrison County leans more Republican than 15 of 18 neighbors.
Harrison County runs about 44 points more Republican than Ohio as a whole.
Why Harrison County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Harrison County, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 11% of adults in Harrison County hold a bachelor's degree, about 12 points below the Ohio average of 23%. Rural areas vote Republican, and Harrison County sits in the bottom quarter on density (about 13%, below 75% of counties).
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Harrison County, OH sits in the bottom quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Harrison County looks the way it does
Turnout in Harrison County 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 Counties
- Jefferson County, OH R+35
- Belmont County, OH R+45
- Carroll County, OH R+55
- Brooke County, WV R+42
- Tuscarawas County, OH R+48
- Ohio County, WV R+20
- Hancock County, WV R+42
- Marshall County, WV R+50
- Guernsey County, OH R+50
- Columbiana County, OH R+45
Counties with Similar Populations
- Mills County, IA R+33
- Cannon County, TN R+69
- Jefferson County, FL R+20
- San Juan County, UT R+19
- Wetzel County, WV R+57
- Moultrie County, IL R+54
- Carbon County, WY R+57
- Dent County, MO R+65
- Clay County, AR R+62
- Las Animas County, CO R+13
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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.