Harrison leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% Republican.
About 41% of adults in Harrison typically vote, below the U.S. average of about 62%. Among adults in Harrison, ~25% vote Democratic, ~16% Republican, and ~59% don't vote. The map below shows estimated turnout by block group.
How Harrison compares
Among cities within 25 miles, Harrison leans more Democratic than 224 of 291 neighbors.
Harrison runs about 16 points more Democratic than New Jersey as a whole.
Politics vary noticeably by neighborhood within Harrison. The southwest side is the most Democratic-leaning (D+52) and the northeast side is the least Democratic-leaning (D+4), a spread of about 48 points.
Why Harrison 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 Harrison, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 96% of residents in Harrison live in densely developed areas, about 59 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Harrison sits in the top quarter (about 48%, above 93% of cities). A high never-married share predicts Democratic voting, and about 39% of adults in Harrison have never been married, above 93% of cities.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Harrison, NJ sits in the top tenth nationally on this measure.
Why turnout in Harrison looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Harrison is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 75% of households in Harrison rent, about 50 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 6% of homes in Harrison have more than one occupant per room, above 90% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- East Newark, NJ D+4
- Kearny, NJ Even
- Newark, NJ D+52
- Silver Lake, NJ D+31
- East Orange, NJ D+80
- North Arlington, NJ R+12
- Belleville, NJ D+10
- Bloomfield, NJ D+39
- Irvington, NJ D+78
- Orange, NJ D+72
Cities with Similar Populations
- Sparta, TN R+64
- Georgetown, DE R+16
- Metuchen, NJ D+24
- Lakeway, TX Even
- Vincent, CA D+22
- Camp Springs, MD D+83
- Belmar, NJ R+15
- Indian Land, SC R+20
- Central, LA R+47
- Moraga, CA D+49
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.