Glen Gardner leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 83% of adults in Glen Gardner typically vote, above the U.S. average of about 62%. Among adults in Glen Gardner, ~35% vote Democratic, ~48% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How Glen Gardner compares
Among cities within 25 miles, Glen Gardner leans more Republican than 104 of 171 neighbors.
Glen Gardner runs about 21 points more Republican than New Jersey as a whole. New Jersey leans Democratic overall, while Glen Gardner is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Glen Gardner. The north side is the most Republican-leaning (R+22) and the west side is the least Republican-leaning (R+11), a spread of about 11 points.
Why Glen Gardner 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 Glen Gardner, not a ranked or complete list of what matters most.
Glen Gardner votes Republican even though it is densely developed (about 22%, far below the New Jersey average of 61%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Glen Gardner runs against the grain of New Jersey, a Republican-leaning pocket in a Democratic-leaning state.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as Glen Gardner, NJ does.
Why turnout in Glen Gardner looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Glen Gardner 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%. High high-school completion lines up with higher turnout, and about 97% of adults in Glen Gardner have completed high school, above 89% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Changewater, NJ R+25
- High Bridge, NJ D+6
- Port Colden, NJ R+23
- Washington, NJ R+14
- Clinton, NJ D+5
- Cedar Heights, NJ Even
- Jutland, NJ R+8
- Port Murray, NJ R+22
- Califon, NJ R+9
- Asbury, NJ R+25
Cities with Similar Populations
- Corvallis, MT R+53
- Chetek, WI R+31
- Newport, NH R+16
- Trenton, SC R+26
- Angola, LA R+66
- Highwood, IL D+34
- Saranac, MI R+35
- Glencoe, AL R+67
- Hawkins, TX R+57
- Whites Creek, TN D+21
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.