19975 leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% Republican.
About 87% of adults in 19975 typically vote, above the U.S. average of about 62%. Among adults in 19975, ~35% vote Democratic, ~52% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How 19975 compares
Among zip codes within 15 miles, 19975 leans more Republican than 8 of 13 neighbors.
19975 runs about 34 points more Republican than Delaware as a whole. Delaware leans Democratic overall, while 19975 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 19975. The west side is the most Republican-leaning (R+24) and the southeast side is the least Republican-leaning (R+12), a spread of about 12 points.
Why 19975 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 19975, not a ranked or complete list of what matters most.
19975 votes against the grain of Delaware. Delaware leans Democratic overall, while 19975 runs about 34 points more Republican.
Food insecurity and voter turnout
Places with low food insecurity tend to turn out at a higher rate; 19975, DE sits in the bottom quarter nationally on this measure. Food insecurity does not directly drive turnout; it reflects economic hardship, which lines up with lower voting.
Why turnout in 19975 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 19975 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 67%, about 7 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
Sources and methodology
Precinct-level voting records used to fit the model come from Delaware Department 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.