Rock leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.
About 71% of adults in Rock typically vote, above the U.S. average of about 62%. Among adults in Rock, ~22% vote Democratic, ~49% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How Rock compares
Among cities within 25 miles, Rock leans more Republican than 37 of 44 neighbors.
Rock runs about 38 points more Republican than Michigan as a whole.
Why Rock leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Rock. The lean here lands roughly where demographic data alone would predict.
Population density and Republican lean
Places with low population density tend to lean Republican; Rock, MI sits in the bottom quarter nationally on this measure.
Why turnout in Rock looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Rock 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 68%, about 8 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 94% of households in Rock own their home, about 19 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Trombly, MI R+38
- Lathrop, MI R+37
- St. Nicholas, MI R+39
- Perkins, MI R+40
- McFarland, MI R+33
- Masonville, MI R+37
- Trenary, MI R+27
- Cornell, MI R+39
- Kiva, MI R+27
- Kipling, MI R+32
Cities with Similar Populations
- Newharp, TX R+77
- Fountain Hill, AR R+71
- East Lynn, WV R+61
- Jeffris, WI R+32
- Marys Corner, WA R+46
- Plymouth, UT R+78
- Martha Furnace, PA R+52
- Mount Aetna, PA R+56
- Greater Galesburg, MI R+18
- Green Acres, ND D+67
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.