Haddon Heights leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 87% of adults in Haddon Heights typically vote, above the U.S. average of about 62%. Among adults in Haddon Heights, ~56% vote Democratic, ~31% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How Haddon Heights compares
Among cities within 25 miles, Haddon Heights leans more Democratic than 177 of 238 neighbors.
Haddon Heights runs about 23 points more Democratic than New Jersey as a whole.
Why Haddon Heights 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 Haddon Heights, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 97% of residents in Haddon Heights live in densely developed areas, about 60 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Haddon Heights sits in the top quarter (about 58%, above 96% of cities).
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Haddon Heights, NJ sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Haddon Heights looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Haddon Heights 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 75%, about 15 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Haddon Heights have completed high school, above 93% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Audubon, NJ D+17
- Barrington, NJ D+17
- Mount Ephraim, NJ Even
- Bellmawr, NJ R+2
- Audubon Park, NJ D+8
- Haddonfield, NJ D+41
- Runnemede, NJ Even
- Lawnside, NJ D+83
- Oaklyn, NJ D+40
- Collingswood, NJ D+47
Cities with Similar Populations
- Yerington, NV R+45
- Hickam Housing, HI D+8
- Elon College, NC R+36
- University Park, IL D+71
- Florence, CO R+17
- Wayland, MA D+36
- Clyde, TX R+66
- Orange Home, FL D+12
- Sarver, PA R+37
- Hartland, MI R+25
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.