Cumming leans Republican by roughly 28 points: about 36% of voters vote Democratic and 64% Republican.
About 94% of adults in Cumming typically vote, above the U.S. average of about 62%. Among adults in Cumming, ~34% vote Democratic, ~60% Republican, and ~6% don't vote. The map below shows estimated turnout by block group.
How Cumming compares
Among cities within 25 miles, Cumming leans more Republican than 16 of 55 neighbors.
Cumming runs about 15 points more Republican than Iowa as a whole.
Politics vary noticeably by neighborhood within Cumming. The southwest side is the most Republican-leaning (R+40) and the north side is the least Republican-leaning (R+6), a spread of about 34 points.
Why Cumming 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 Cumming, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 82% of households in Cumming are family households, about 16 points above the U.S. average of 67%.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as Cumming, IA does.
Why turnout in Cumming looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Cumming 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 72%, about 12 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 95% of households in Cumming own their home, about 20 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 97% of adults in Cumming have completed high school, above 92% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Booneville, IA R+16
- Norwalk, IA R+19
- West Des Moines, IA D+15
- Martensdale, IA R+39
- Bevington, IA R+45
- Van Meter, IA R+31
- Prole, IA R+38
- Clive, IA D+10
- Waukee, IA Even
- Spring Hill, IA R+33
Cities with Similar Populations
- Boyd, WI R+40
- Rich Square, NC D+32
- St. Martins, MO R+48
- Randle, WA R+30
- Eagletown, OK R+72
- Slaughters, KY R+62
- Greenwood, MI R+48
- East Millinocket, ME R+20
- Menan, ID R+75
- Craig South Highlands, CO R+65
Sources and methodology
Precinct-level voting records used to fit the model come from Iowa Secretary 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.