Monroe County leans Republican by roughly 26 points: about 37% of voters vote Democratic and 63% Republican.
About 87% of adults in Monroe County typically vote, above the U.S. average of about 62%. Among adults in Monroe County, ~32% vote Democratic, ~55% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How Monroe County compares
Among counties within 50 miles, Monroe County leans more Republican than 5 of 10 neighbors.
Monroe County runs about 25 points more Republican than Michigan as a whole.
Politics vary noticeably by city within Monroe County. The north side is the most Republican-leaning (R+41) and the east side is the least Republican-leaning (R+15), a spread of about 26 points.
Why Monroe County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Monroe County, not a ranked or complete list of what matters most.
Monroe County votes Republican even though it is densely developed (about 53%, well above the Michigan average of 31%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Monroe County, 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 Monroe County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Monroe 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 69%, about 9 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 83% of households in Monroe County own their home, above 90% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Lucas County, OH D+17
- Washtenaw County, MI D+44
- Lenawee County, MI R+27
- Wood County, OH R+11
- Wayne County, MI D+33
- Ottawa County, OH R+30
- Fulton County, OH R+45
- Sandusky County, OH R+33
- Oakland County, MI D+14
- Henry County, OH R+53
Counties with Similar Populations
- Santa Fe County, NM D+45
- Washington County, MD R+18
- Canadian County, OK R+37
- Berrien County, MI Even
- Cumberland County, NJ D+7
- Mesa County, CO R+20
- Citrus County, FL R+43
- Merrimack County, NH D+6
- Franklin County, PA R+41
- Columbia County, GA R+21
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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.