Cass County leans Republican by roughly 28 points: about 36% of voters vote Democratic and 64% Republican.
About 86% of adults in Cass County typically vote, above the U.S. average of about 62%. Among adults in Cass County, ~31% vote Democratic, ~55% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.
How Cass County compares
Among counties within 50 miles, Cass County leans more Republican than 6 of 11 neighbors.
Cass County runs about 27 points more Republican than Michigan as a whole.
Politics vary noticeably by city within Cass County. The northeast side is the most Republican-leaning (R+38) and the northwest side is the least Republican-leaning (R+17), a spread of about 20 points.
Why Cass County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Cass County. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Cass County, MI sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Cass County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Cass County 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%. Homeowners vote more often than renters, and about 82% of households in Cass County own their home, above 87% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- St. Joseph County, IN D+9
- Elkhart County, IN R+28
- Berrien County, MI Even
- Van Buren County, MI R+20
- St. Joseph County, MI R+35
- LaGrange County, IN R+63
- Kalamazoo County, MI D+17
- Marshall County, IN R+44
- LaPorte County, IN R+11
- Kosciusko County, IN R+47
Counties with Similar Populations
- Nye County, NV R+41
- Franklin County, KY R+19
- St. Martin Parish, LA R+35
- Oktibbeha County, MS D+3
- Ogle County, IL R+28
- Waupaca County, WI R+34
- Harrisonburg City, VA D+18
- Darke County, OH R+61
- Grant County, WI R+23
- Wayne County, PA R+36
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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.