Manville, NJ Political Map | Democrat & Republican Areas in Manville

By the BestNeighborhood data science team. Last updated May 2026.

Manville leans slightly Republican by roughly 10 points: about 45% of voters vote Democratic and 55% Republican.

 

About 67% of adults in Manville typically vote, near the U.S. average of about 62%. Among adults in Manville, ~30% vote Democratic, ~37% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.

How Manville compares

Among cities within 25 miles, Manville leans more Republican than 165 of 204 neighbors.

Manville runs about 15 points more Republican than New Jersey as a whole. New Jersey leans Democratic overall, while Manville is one of the few Republican-leaning pockets.

Politics vary noticeably by neighborhood within Manville. The south side is the most Republican-leaning (R+17) and the northeast side is the least Republican-leaning (R+4), a spread of about 12 points.

Why Manville 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 Manville, not a ranked or complete list of what matters most.

Manville votes Republican even though it is densely developed (about 87%, well above the New Jersey average of 61%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Manville runs against the grain of New Jersey, a Republican-leaning pocket in a Democratic-leaning state.

Paved land cover and Democratic lean

Places with extensive paved surfaces tend to lean Democratic; Manville, NJ sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.

Why turnout in Manville looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Manville is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Learn more about the findings and methodology on the political spectrum map.

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.