Summerset leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 79% of adults in Summerset typically vote, above the U.S. average of about 62%. Among adults in Summerset, ~25% vote Democratic, ~54% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How Summerset compares
Among cities within 25 miles, Summerset leans more Republican than 29 of 59 neighbors.
Summerset runs about 23 points more Republican than Iowa as a whole.
Why Summerset leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Summerset. The lean here lands roughly where demographic data alone would predict.
Food insecurity and voter turnout
Places with low food insecurity tend to turn out at a higher rate; Summerset, IA sits in the bottom tenth nationally on this measure. Food insecurity does not directly drive turnout; it reflects economic hardship, which lines up with lower voting.
Why turnout in Summerset looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Summerset 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 73%, about 13 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Summerset have completed high school, above 86% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Scotch Ridge, IA R+31
- Palmyra, IA R+39
- Indianola, IA R+17
- Ackworth, IA R+38
- Carlisle, IA R+28
- Spring Hill, IA R+33
- Medora, IA R+36
- Hartford, IA R+39
- Sandyville, IA R+39
- Norwalk, IA R+19
Cities with Similar Populations
- Johnson, NE R+54
- Mico, TX R+58
- Alpine, AZ R+55
- Southfields, NY R+3
- Victory Heights, PA R+54
- Taylor, ND R+74
- Severy, KS R+69
- Rose Hill, MS R+18
- Springdale, UT R+54
- Northwye, MO R+60
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.