Ashtabula County leans heavily Republican by roughly 32 points: about 34% of voters vote Democratic and 66% Republican.
About 70% of adults in Ashtabula County typically vote, above the U.S. average of about 62%. Among adults in Ashtabula County, ~24% vote Democratic, ~46% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How Ashtabula County compares
Among counties within 50 miles, Ashtabula County leans more Republican than 6 of 7 neighbors.
Ashtabula County runs about 20 points more Republican than Ohio as a whole.
Politics vary noticeably by city within Ashtabula County. The southeast side is the most Republican-leaning (R+53) and the north side is the least Republican-leaning (R+12), a spread of about 41 points.
Why Ashtabula 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 Ashtabula County, not a ranked or complete list of what matters most.
Areas with low college attainment vote Republican. About 16% of adults in Ashtabula County hold a bachelor's degree, about 7 points below the Ohio average of 23%.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; Ashtabula County, OH sits below 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 Ashtabula County looks the way it does
Turnout in Ashtabula 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
- Lake County, OH R+11
- Geauga County, OH R+30
- Crawford County, PA R+39
- Trumbull County, OH R+17
- Erie County, PA Even
- Mercer County, PA R+27
- Portage County, OH R+12
- Mahoning County, OH Even
- Cuyahoga County, OH D+35
- Venango County, PA R+42
Counties with Similar Populations
- Lafourche Parish, LA R+55
- Marshall County, AL R+64
- Putnam County, NY R+13
- Portsmouth City, VA D+41
- Bastrop County, TX R+24
- Sherburne County, MN R+29
- Roanoke County, VA R+23
- Sevier County, TN R+58
- Franklin County, WA R+16
- Burleigh County, ND R+32
All Local Stats
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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.