South Riley leans Republican by roughly 22 points: about 39% of voters vote Democratic and 61% Republican.
About 94% of adults in South Riley typically vote, above the U.S. average of about 62%. Among adults in South Riley, ~37% vote Democratic, ~58% Republican, and ~5% don't vote. The map below shows estimated turnout by block group.
How South Riley compares
Among cities within 25 miles, South Riley leans more Republican than 17 of 57 neighbors.
South Riley runs about 21 points more Republican than Michigan as a whole.
Politics vary noticeably by neighborhood within South Riley. The west side is the most Republican-leaning (R+31) and the southeast side is the least Republican-leaning (R+5), a spread of about 26 points.
Why South Riley leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in South Riley. The lean here lands roughly where demographic data alone would predict.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; South Riley, MI sits in the top tenth 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 South Riley looks the way it does
Areas with strong routine healthcare access turn out at higher rates. South Riley 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 73%, about 13 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 96% of households in South Riley own their home, about 21 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Eagle, MI R+37
- Dewitt, MI Even
- Eureka, MI R+34
- Wacousta, MI R+15
- Westphalia, MI R+45
- Grand Ledge, MI R+4
- Waverly, MI D+25
- Fowler, MI R+48
- St. Johns, MI R+21
- Bath, MI R+4
Cities with Similar Populations
- Ideal, GA R+10
- Walhalla, ND R+51
- Gilbertville, IA R+38
- Peniel Crossroads, SC R+5
- Elgin, NE R+76
- Crawford, NE R+61
- Shawboro, NC R+50
- Round Mountain, TX R+53
- Lum, MI R+45
- Commiskey, IN R+61
Sources and methodology
Precinct-level voting records used to fit the model come from Michigan Department of State, 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.