Delaware, OH Political Map | Democrat & Republican Areas in Delaware

By the BestNeighborhood data science team. Last updated May 2026.

Delaware leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.

 

About 84% of adults in Delaware typically vote, above the U.S. average of about 62%. Among adults in Delaware, ~39% vote Democratic, ~45% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.

How Delaware compares

Among cities within 25 miles, Delaware leans more Republican than 20 of 87 neighbors.

Politically, Delaware sits close to the rest of Ohio.

Politics vary noticeably by neighborhood within Delaware. The north side runs the most Democratic (Even) and the northeast side runs the most Republican (R+21), a spread of about 21 points.

Why Delaware 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 Delaware, not a ranked or complete list of what matters most.

Delaware votes Republican even though it is densely developed (about 64%, far above the Ohio average of 34%). State and regional patterns outweigh the Democratic lean that density usually predicts here.

Population density and Democratic lean

Places with high population density tend to lean Democratic; Delaware, OH sits in the top tenth nationally on this measure.

Why turnout in Delaware looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Delaware is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 71%, about 11 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Delaware have completed high school, above 82% of cities. Learn more about the findings and methodology on the political spectrum map.

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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.