Three Bridges leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 79% of adults in Three Bridges typically vote, above the U.S. average of about 62%. Among adults in Three Bridges, ~36% vote Democratic, ~43% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How Three Bridges compares
Among cities within 25 miles, Three Bridges leans more Republican than 138 of 187 neighbors.
Three Bridges runs about 15 points more Republican than New Jersey as a whole. New Jersey leans Democratic overall, while Three Bridges is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Three Bridges. The northwest side is the most Republican-leaning (R+17) and the northeast side is the least Republican-leaning (R+5), a spread of about 13 points.
Why Three Bridges 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 Three Bridges, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 85% of residents in Three Bridges drive to work alone, about 11 points above the U.S. average of 74%. Three Bridges runs against the grain of New Jersey, a Republican-leaning pocket in a Democratic-leaning state.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Three Bridges, NJ sits in the top quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Three Bridges looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Three Bridges 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 70%, about 10 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Neshanic Station, NJ R+9
- Reaville, NJ R+11
- Flemington, NJ Even
- Flagtown, NJ R+4
- Whitehouse Station, NJ R+14
- Ringoes, NJ R+4
- Whitehouse, NJ R+16
- Bradley Gardens, NJ D+9
- Hillsborough, NJ D+8
- Somerville, NJ D+12
Cities with Similar Populations
- Sheldon, IL R+50
- Pringle, PA R+3
- Oak Grove, TX R+66
- Woodburn, VA D+35
- Medanales, NM D+20
- Glade Valley, NC R+58
- Garrison, MN R+27
- Kamilche, WA R+8
- Sterling City, TX R+80
- Mershon, GA R+81
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.