Hudson County leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 48% of adults in Hudson County typically vote, below the U.S. average of about 62%. Among adults in Hudson County, ~31% vote Democratic, ~17% Republican, and ~52% don't vote. The map below shows estimated turnout by block group.
How Hudson County compares
Among counties within 50 miles, Hudson County leans more Democratic than 16 of 21 neighbors.
Hudson County runs about 22 points more Democratic than New Jersey as a whole.
Politics vary noticeably by city within Hudson County. The south side runs the most Democratic (D+59) and the northwest side runs the most Republican (R+4), a spread of about 63 points.
Why Hudson County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Hudson County, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 94% of residents in Hudson County live in densely developed areas, about 57 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Hudson County sits in the top quarter (about 47%, above 96% of counties). A high never-married share predicts Democratic voting, and about 42% of adults in Hudson County have never been married, above 95% of counties.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Hudson County, NJ sits in the top tenth nationally on this measure.
Why turnout in Hudson County looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Hudson County is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 68% of households in Hudson County rent, compared to around 50% in nearby counties. Crowded housing lines up with lower turnout, and about 8% of homes in Hudson County have more than one occupant per room, above 97% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- New York County, NY D+62
- Essex County, NJ D+48
- Kings County, NY D+34
- Richmond County, NY R+21
- Bronx County, NY D+43
- Queens County, NY D+23
- Bergen County, NJ D+5
- Union County, NJ D+26
- Passaic County, NJ D+4
- Nassau County, NY Even
Counties with Similar Populations
- Polk County, FL R+18
- Norfolk County, MA D+30
- El Paso County, CO R+7
- Jackson County, MO D+24
- Davidson County, TN D+26
- Denver County, CO D+53
- Lake County, IL D+22
- Will County, IL D+6
- Monroe County, NY D+25
- District of Columbia, DC D+80
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.