South Haven is a true toss-up. About 49% of voters here vote Democratic and 51% Republican.
About 86% of adults in South Haven typically vote, above the U.S. average of about 62%. Among adults in South Haven, ~42% vote Democratic, ~44% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.
How South Haven compares
Among cities within 25 miles, South Haven sits roughly in the middle of the political spectrum, with 6 neighbors leaning further in the place's direction and 46 leaning the other way.
Politically, South Haven sits close to the rest of Michigan.
Politics vary noticeably by neighborhood within South Haven. The west side runs the most Democratic (D+16) and the southeast side runs the most Republican (R+20), a spread of about 35 points.
Why South Haven leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in South Haven. The lean here lands roughly where demographic data alone would predict.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; South Haven, MI sits in the top quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in South Haven looks the way it does
Areas with strong routine healthcare access turn out at higher rates. South Haven 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 Cities
- Lacota, MI R+17
- Kibbie, MI R+25
- Palisades Park, MI R+5
- Leisure, MI R+16
- Covert, MI Even
- Grand Junction, MI R+31
- Breedsville, MI R+31
- Bangor, MI R+19
- Pullman, MI R+28
- Toquin, MI R+23
Cities with Similar Populations
- Red Bank, SC R+43
- Walkertown, NC R+24
- Kempner, TX R+52
- Coarsegold, CA R+29
- Parsons, KS R+25
- Kenai, AK R+28
- Triangle, VA D+43
- Pocahontas, AR R+59
- Harrisburg, IL R+44
- Chillicothe, MO R+46
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.