Sag Bridge leans Republican by roughly 22 points: about 39% of voters vote Democratic and 61% Republican.
About 87% of adults in Sag Bridge typically vote, above the U.S. average of about 62%. Among adults in Sag Bridge, ~34% vote Democratic, ~53% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How Sag Bridge compares
Among cities within 25 miles, Sag Bridge leans more Republican than 156 of 163 neighbors.
Sag Bridge runs about 32 points more Republican than Illinois as a whole. Illinois leans Democratic overall, while Sag Bridge is one of the few Republican-leaning pockets.
Why Sag Bridge 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 Sag Bridge, not a ranked or complete list of what matters most.
Sag Bridge votes Republican even though it is densely developed (about 53%, well above the Illinois average of 33%). Here an older population outweighs the Democratic lean that density usually predicts. Sag Bridge runs against the grain of Illinois, 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 Sag Bridge, IL does.
Why turnout in Sag Bridge looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Sag Bridge 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 71%, about 11 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 97% of adults in Sag Bridge have completed high school, above 91% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Lemont, IL R+18
- Palos Park, IL R+8
- Homer Glen, IL R+27
- Willow Springs, IL R+12
- Burr Ridge, IL R+3
- Darien, IL D+3
- Palos Hills, IL R+11
- Orland Park, IL R+9
- Willowbrook, IL D+5
- Hickory Hills, IL R+11
Cities with Similar Populations
- Cooksburg, PA R+57
- Twin Lakes, CO R+4
- Woodrow, CO R+79
- Mexico, PA R+63
- Glad Valley, SD D+37
- Bingham, TN R+46
- Big Rocks, OK R+71
- Kimages, VA D+16
- Sulphur, IN R+56
- Witt Springs, KY R+62
Sources and methodology
Precinct-level voting records used to fit the model come from Illinois State Board 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.