North Plainfield, NJ Political Map | Democrat & Republican Areas in North Plainfield

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

North Plainfield leans heavily Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.

 

About 50% of adults in North Plainfield typically vote, below the U.S. average of about 62%. Among adults in North Plainfield, ~32% vote Democratic, ~18% Republican, and ~50% don't vote. The map below shows estimated turnout by block group.

How North Plainfield compares

Among cities within 25 miles, North Plainfield leans more Democratic than 201 of 239 neighbors.

North Plainfield runs about 25 points more Democratic than New Jersey as a whole.

Politics vary noticeably by neighborhood within North Plainfield. The northeast side is the most Democratic-leaning (D+41) and the east side is the least Democratic-leaning (D+22), a spread of about 19 points.

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

Dense areas vote Democratic. About 96% of residents in North Plainfield live in densely developed areas, about 60 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 43% of adults in North Plainfield have never been married, above 96% of cities.

Paved land cover and Democratic lean

Places with extensive paved surfaces tend to lean Democratic; North Plainfield, 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 North Plainfield looks the way it does

Areas with limited routine healthcare access turn out at lower rates. North Plainfield is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The uninsured rate here is about 21%, about 11 points above the New Jersey average of 10%. Renters vote less often than owners, and about 39% of households in North Plainfield rent, compared to around 20% in nearby cities. High food insecurity lines up with lower turnout, and about 25% of adults in North Plainfield report food insecurity, above 90% of cities. 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.