Florham Park, NJ Political Map | Democrat & Republican Areas in Florham Park

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

Florham Park leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.

 

About 80% of adults in Florham Park typically vote, above the U.S. average of about 62%. Among adults in Florham Park, ~43% vote Democratic, ~38% Republican, and ~19% don't vote. The map below shows estimated turnout by block group.

How Florham Park compares

Among cities within 25 miles, Florham Park leans more Democratic than 160 of 270 neighbors.

Politically, Florham Park sits close to the rest of New Jersey.

Politics vary noticeably by neighborhood within Florham Park. The southwest side runs the most Democratic (D+23) and the south side runs the most Republican (R+5), a spread of about 28 points.

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

Areas with high college attainment vote Democratic. About 70% of adults in Florham Park hold a bachelor's degree, about 42 points above the U.S. average of 28%. Dense areas vote Democratic, and Florham Park sits in the top fifth on density (about 76%, above 93% of cities). A high never-married share predicts Democratic voting, and about 36% of adults in Florham Park have never been married, above 88% of cities.

Population density and Democratic lean

Places with high population density tend to lean Democratic; Florham Park, NJ sits in the top tenth nationally on this measure.

Why turnout in Florham Park looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Florham Park 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 76%, about 16 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 99% of adults in Florham Park have completed high school, above 98% 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.