Roseland is a true toss-up. About 50% of voters here vote Democratic and 50% Republican.
About 88% of adults in Roseland typically vote, above the U.S. average of about 62%. Among adults in Roseland, ~44% vote Democratic, ~44% Republican, and ~12% don't vote. The map below shows estimated turnout by block group.
How Roseland compares
Among cities within 25 miles, Roseland sits roughly in the middle of the political spectrum, with 136 neighbors leaning further in the place's direction and 139 leaning the other way.
Roseland runs about 5 points more Republican than New Jersey as a whole.
Politics vary noticeably by neighborhood within Roseland. The south side runs the most Democratic (D+20) and the west side runs the most Republican (R+3), a spread of about 23 points.
Why Roseland leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Roseland. The lean here lands roughly where demographic data alone would predict.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Roseland, NJ sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Roseland looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Roseland 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 77%, about 17 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 97% of adults in Roseland have completed high school, above 87% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Essex Fells, NJ Even
- Caldwell, NJ Even
- Livingston, NJ D+18
- East Hanover, NJ R+32
- Verona, NJ D+15
- West Orange, NJ D+51
- Pine Brook, NJ Even
- North Caldwell, NJ R+2
- Fairfield, NJ R+38
- Cedar Grove, NJ R+7
Cities with Similar Populations
- Blanchard, LA R+61
- Summerdale, AL R+73
- Ligonier, PA R+31
- Wayne, NE R+33
- Judsonia, AR R+69
- Fairfield, IL R+56
- Bowleys Quarters, MD R+12
- Spring Hope, NC R+20
- Wellsville, OH R+40
- Spirit Lake, IA R+30
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.