Lambertville leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 80% of adults in Lambertville typically vote, above the U.S. average of about 62%. Among adults in Lambertville, ~51% vote Democratic, ~29% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How Lambertville compares
Among cities within 25 miles, Lambertville leans more Democratic than 160 of 188 neighbors.
Lambertville runs about 22 points more Democratic than New Jersey as a whole.
Politics vary noticeably by neighborhood within Lambertville. The west side runs the most Democratic (D+61) and the east side runs the most Republican (R+10), a spread of about 71 points.
Why Lambertville 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 Lambertville, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 59% of adults in Lambertville hold a bachelor's degree, about 31 points above the U.S. average of 28%. Dense areas vote Democratic, and Lambertville sits in the top fifth on density (about 38%, above 83% of cities).
Population density and Democratic lean
Places with high population density tend to lean Democratic; Lambertville, NJ sits in the top tenth nationally on this measure.
Why turnout in Lambertville looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Lambertville 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 72%, about 12 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- New Hope, PA D+16
- Brownsburg, PA D+2
- Dilts Corner, NJ D+4
- Larisons Corner, NJ R+8
- Stockton, NJ Even
- Woodsville, NJ D+8
- Washington Crossing, PA D+6
- Glendale, PA Even
- Titusville, NJ D+21
- Holicong, PA Even
Cities with Similar Populations
- Nashville, AR R+32
- Indiantown, FL Even
- Marseilles, IL R+26
- Richland Center, WI R+16
- Mendenhall, MS R+34
- Hayesville, NC R+46
- Benson, AZ R+39
- Nokesville, VA R+27
- Williamstown, MA D+64
- Spring City, TN R+66
All Local Stats
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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.