08203 leans slightly Republican by roughly 10 points: about 45% of voters vote Democratic and 55% Republican.
About 78% of adults in 08203 typically vote, above the U.S. average of about 62%. Among adults in 08203, ~35% vote Democratic, ~43% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How 08203 compares
Among zip codes within 15 miles, 08203 leans more Republican than 10 of 16 neighbors.
08203 runs about 15 points more Republican than New Jersey as a whole. New Jersey leans Democratic overall, while 08203 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 08203. The southwest side runs the most Democratic (Even) and the northwest side runs the most Republican (R+22), a spread of about 22 points.
Why 08203 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 08203, not a ranked or complete list of what matters most.
08203 votes Republican even though it is densely developed (about 65%, about 28 points above the U.S. average of 36%). Here an older population outweighs the Democratic lean that density usually predicts. 08203 runs against the grain of New Jersey, a Republican-leaning pocket in a Democratic-leaning state.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; 08203, NJ sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 08203 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 08203 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 67%, about 7 points above the U.S. average of 60%. 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.