Edwardsville leans heavily Republican by roughly 50 points: about 25% of voters vote Democratic and 75% Republican.
About 78% of adults in Edwardsville typically vote, above the U.S. average of about 62%. Among adults in Edwardsville, ~20% vote Democratic, ~59% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How Edwardsville compares
Among cities within 25 miles, Edwardsville leans more Republican than 90 of 95 neighbors.
Edwardsville runs about 64 points more Republican than Delaware as a whole. Delaware leans Democratic overall, while Edwardsville is one of the few Republican-leaning pockets.
Why Edwardsville 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 Edwardsville, not a ranked or complete list of what matters most.
Edwardsville votes against the grain of Delaware. Delaware leans Democratic overall, while Edwardsville runs about 64 points more Republican.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; Edwardsville, DE sits in the top quarter nationally on this measure.
Why turnout in Edwardsville looks the way it does
Homeowners vote more often than renters. About 93% of households in Edwardsville own their home, about 14 points above the Delaware average of 78%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Sandtown, DE R+47
- Hollandsville, DE R+45
- Union Corner, MD R+50
- Greensboro, MD R+37
- Reeves Crossing, DE R+35
- Felton, DE R+24
- Viola, DE R+33
- Goldsboro, MD R+48
- Henderson, MD R+49
Cities with Similar Populations
- Rix Mills, OH R+55
- Dollarville, MI R+28
- Discovery Bay, WA D+25
- Moffitt Hill, NC R+50
- Bud, WV R+68
- Milton, UT R+71
- Williamsport, KY R+66
- New Millport, PA R+66
- Meda, OR Even
- Hillsboro, MS D+11
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.