Jamestown leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 98% of adults in Jamestown typically vote, above the U.S. average of about 62%. Among adults in Jamestown, ~31% vote Democratic, ~67% Republican, and ~2% don't vote. The map below shows estimated turnout by block group.
How Jamestown compares
Among cities within 25 miles, Jamestown leans more Republican than 49 of 79 neighbors.
Jamestown runs about 35 points more Republican than Michigan as a whole.
Politics vary noticeably by neighborhood within Jamestown. The south side is the most Republican-leaning (R+50) and the northwest side is the least Republican-leaning (R+28), a spread of about 22 points.
Why Jamestown 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 Jamestown, not a ranked or complete list of what matters most.
Jamestown votes Republican even though it is densely developed (about 37%, modestly 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; Jamestown, 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 Jamestown looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Jamestown 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 76%, about 16 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 97% of adults in Jamestown have completed high school, above 89% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Hudsonville, MI R+32
- Forest Grove, MI R+54
- Grandville, MI R+5
- Jenison, MI R+23
- Vriesland, MI R+45
- North Dorr, MI R+46
- Byron Center, MI R+21
- Burnips, MI R+48
- Drenthe, MI R+45
- Wyoming, MI D+12
Cities with Similar Populations
- Stockdale, TX R+58
- Cascade, IA R+35
- Cumberland Gap, TN R+60
- Waynesburg, OH R+47
- Brookston, IN R+42
- Terra Alta, WV R+65
- Ridgway, CO D+10
- Caledonia, IL R+15
- Waterloo, IN R+51
- Algona, WA D+11
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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.