Sparta leans Republican by roughly 18 points: about 41% of voters vote Democratic and 59% Republican.
About 85% of adults in Sparta typically vote, above the U.S. average of about 62%. Among adults in Sparta, ~35% vote Democratic, ~50% Republican, and ~15% don't vote. The map below shows estimated turnout by block group.
How Sparta compares
Among cities within 25 miles, Sparta leans more Republican than 91 of 163 neighbors.
Sparta runs about 23 points more Republican than New Jersey as a whole. New Jersey leans Democratic overall, while Sparta is one of the few Republican-leaning pockets.
Why Sparta 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 Sparta, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 83% of households in Sparta are family households, about 17 points above the U.S. average of 67%. Dense places usually vote Democratic, but Sparta runs against that pattern. Sparta runs against the grain of New Jersey, a Republican-leaning pocket in a Democratic-leaning state.
Food insecurity and voter turnout
Places with low food insecurity tend to turn out at a higher rate; Sparta, NJ sits in the bottom tenth nationally on this measure. Food insecurity does not directly drive turnout; it reflects economic hardship, which lines up with lower voting.
Why turnout in Sparta looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Sparta 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 75%, about 15 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 92% of households in Sparta own their home, about 17 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 98% of adults in Sparta have completed high school, above 93% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- South Ogdensburg, NJ R+21
- Lake Mohawk, NJ R+8
- Ogdensburg, NJ R+23
- Upper Mohawk, NJ R+20
- Stockholm, NJ R+29
- Lake Hopatcong, NJ R+15
- Lafayette, NJ R+27
- Franklin, NJ R+23
- Oak Ridge, NJ R+27
Cities with Similar Populations
- Edinboro, PA Even
- Bealeton, VA R+28
- Orient, OH R+26
- Flossmoor, IL D+72
- Madeira, OH D+11
- Mount Horeb, WI D+16
- Capitola, CA D+49
- Chanute, KS R+40
- Suncook, NH R+4
- White River Junction, VT 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.