Summerfield leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 73% of adults in Summerfield typically vote, above the U.S. average of about 62%. Among adults in Summerfield, ~22% vote Democratic, ~51% Republican, and ~27% don't vote. The map below shows estimated turnout by block group.
How Summerfield compares
Among cities within 25 miles, Summerfield leans more Republican than 154 of 157 neighbors.
Summerfield runs about 46 points more Republican than New Jersey as a whole. New Jersey leans Democratic overall, while Summerfield is one of the few Republican-leaning pockets.
Why Summerfield 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 Summerfield, not a ranked or complete list of what matters most.
Summerfield votes against the grain of New Jersey. New Jersey leans Democratic overall, while Summerfield runs about 46 points more Republican. A high family-household share predicts Republican voting, and about 77% of households in Summerfield are family households, above 81% of cities.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Summerfield, 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 Summerfield looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Summerfield 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 69%, about 9 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and more than 99% of adults in Summerfield have completed high school, in the top fraction of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Belvidere, NJ R+27
- Bridgeville, NJ R+41
- Buttzville, NJ R+37
- Oxford, NJ R+28
- Delaware, NJ R+40
- Mount Bethel, PA R+31
- Hutchinson, NJ R+43
- Mount Hermon, NJ R+36
- Broadway, NJ R+35
- Washington, NJ R+14
Cities with Similar Populations
- Divot, TX R+29
- Nechanitz, TX R+65
- Valcour, NY R+8
- Vega, GA R+75
- Hollins, AL R+83
- Olena, IL R+44
- Garber, IL R+57
- Spring Lake, MN R+24
- Flowertown, TN R+65
- Mount Airy, MO R+68
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.