Oak Harbor leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 91% of adults in Oak Harbor typically vote, above the U.S. average of about 62%. Among adults in Oak Harbor, ~29% vote Democratic, ~62% Republican, and ~9% don't vote. The map below shows estimated turnout by block group.
How Oak Harbor compares
Among cities within 25 miles, Oak Harbor leans more Republican than 25 of 74 neighbors.
Oak Harbor runs about 24 points more Republican than Ohio as a whole.
Politics vary noticeably by neighborhood within Oak Harbor. The northwest side is the most Republican-leaning (R+43) and the west side is the least Republican-leaning (R+32), a spread of about 11 points.
Why Oak Harbor 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 Oak Harbor, not a ranked or complete list of what matters most.
Oak Harbor votes Republican even though it is densely developed (about 25%, modestly below the Ohio average of 34%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Oak Harbor, 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 Oak Harbor looks the way it does
Areas with high high-school completion turn out at higher rates. About 96% of adults in Oak Harbor have completed high school, about 5 points above the Ohio average of 91%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Rocky Ridge, OH R+41
- Long Beach, OH R+40
- Lacarne, OH R+33
- Limestone, OH R+44
- Kingsway, OH R+46
- Graytown, OH R+41
- Elmore, OH R+36
- Lindsey, OH R+47
Cities with Similar Populations
- Whitwell, TN R+70
- Hampden, ME R+4
- Giddings, TX R+34
- Central Square, NY R+29
- Springfield, VT R+9
- Union Gap, WA R+8
- Timnath, CO R+4
- Goshen, KY R+17
- Honeoye Falls, NY D+9
- North Branch, MI R+46
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.