08402 leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.
About 92% of adults in 08402 typically vote, above the U.S. average of about 62%. Among adults in 08402, ~43% vote Democratic, ~49% Republican, and ~8% don't vote. The map below shows estimated turnout by block group.
How 08402 compares
Among zip codes within 15 miles, 08402 leans more Republican than 9 of 19 neighbors.
08402 runs about 11 points more Republican than New Jersey as a whole.
Politics vary noticeably by block within 08402. The south side runs the most Democratic (D+2) and the northwest side runs the most Republican (R+10), a spread of about 12 points.
Why 08402 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 08402, not a ranked or complete list of what matters most.
08402 votes Republican even though it is densely developed (about 69%, modestly above the New Jersey average of 63%). Here an older population outweighs the Democratic lean that density usually predicts.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 08402, NJ sits in the top tenth nationally 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 08402 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 08402 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%. Homeowners vote more often than renters, and about 90% of households in 08402 own their home, compared to around 71% in nearby zip codes. High high-school completion lines up with higher turnout, and about 96% of adults in 08402 have completed high school, above 83% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.