Grosse Ile leans slightly Republican by roughly 12 points: about 44% of voters vote Democratic and 56% Republican.
About more than 99% of adults in Grosse Ile typically vote, above the U.S. average of about 62%. Among adults in Grosse Ile, ~44% vote Democratic, ~56% Republican, and ~0% don't vote. The map below shows estimated turnout by block group.
How Grosse Ile compares
Among cities within 25 miles, Grosse Ile leans more Republican than 43 of 59 neighbors.
Grosse Ile runs about 11 points more Republican than Michigan as a whole.
Why Grosse Ile 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 Grosse Ile, not a ranked or complete list of what matters most.
Grosse Ile votes Republican even though it is densely developed (about 50%, well above the Michigan average of 31%). Here an older population outweighs the Democratic lean that density usually predicts.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Grosse Ile, MI sits in the top tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Grosse Ile looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Grosse Ile 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 78%, about 18 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 92% of households in Grosse Ile own their home, compared to around 76% in nearby cities. High high-school completion lines up with higher turnout, and about 97% of adults in Grosse Ile have completed high school, above 90% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Trenton, MI R+7
- Riverview, MI R+5
- Gibraltar, MI R+20
- Woodhaven, MI R+6
- Wyandotte, MI R+6
- Rockwood, MI R+18
- Southgate, MI Even
- Flat Rock, MI R+12
- Lincoln Park, MI Even
- Ecorse, MI D+46
Cities with Similar Populations
- Baxter, MN R+19
- Chesterland, OH R+24
- Hanover, NH D+60
- Abbeville, SC R+27
- East Grand Forks, MN R+26
- Henderson, TN R+53
- Fremont, MI R+33
- Bellmead, TX D+4
- Etters, PA R+33
- Clarence, NY R+9
All Local Stats
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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.