Dayton leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% Republican.
About 74% of adults in Dayton typically vote, above the U.S. average of about 62%. Among adults in Dayton, ~45% vote Democratic, ~29% Republican, and ~26% don't vote. The map below shows estimated turnout by block group.
How Dayton compares
Among cities within 25 miles, Dayton leans more Democratic than 167 of 203 neighbors.
Dayton runs about 17 points more Democratic than New Jersey as a whole.
Politics vary noticeably by neighborhood within Dayton. The north side is the most Democratic-leaning (D+26) and the northeast side is the least Democratic-leaning (D+8), a spread of about 17 points.
Why Dayton 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 Dayton, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 72% of adults in Dayton hold a bachelor's degree, about 44 points above the U.S. average of 28%. Dense areas vote Democratic, and Dayton sits in the top fifth on density (about 74%, above 93% of cities).
Population density and Democratic lean
Places with high population density tend to lean Democratic; Dayton, NJ sits in the top tenth nationally on this measure.
Why turnout in Dayton looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Dayton 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 73%, about 13 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Monmouth Junction, NJ D+23
- Heathcote, NJ D+32
- Kendall Park, NJ D+17
- Princeton Meadows, NJ D+37
- Franklin Park, NJ D+39
- Plainsboro, NJ D+34
- Helmetta, NJ R+16
- Jamesburg, NJ R+4
- Clearbrook Park, NJ D+12
- Kingston, NJ D+15
Cities with Similar Populations
- Cape St. Claire, MD D+9
- Lamesa, TX R+44
- Poplarville, MS R+63
- Woodstock, VA R+37
- East Rochester, NY D+18
- The Village, OK D+10
- Carthage, TX R+54
- Morgan, UT R+63
- Oak Hill, WV R+38
- Otsego, MI R+26
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Sources and methodology
Precinct-level voting records used to fit the model come from New Jersey Division of 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.