Gladbrook leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 70% of adults in Gladbrook typically vote, above the U.S. average of about 62%. Among adults in Gladbrook, ~21% vote Democratic, ~49% Republican, and ~30% don't vote. The map below shows estimated turnout by block group.
How Gladbrook compares
Among cities within 25 miles, Gladbrook leans more Republican than 22 of 47 neighbors.
Gladbrook runs about 28 points more Republican than Iowa as a whole.
Why Gladbrook leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Gladbrook. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Gladbrook, IA sits in the top quarter nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Gladbrook looks the way it does
Areas with high high-school completion turn out at higher rates. About 96% of adults in Gladbrook have completed high school, about 6 points above the U.S. average of 90%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Lincoln, IA R+47
- Garwin, IA R+37
- Beaman, IA R+42
- Green Mountain, IA R+39
- Conrad, IA R+42
- Reinbeck, IA R+37
- Morrison, IA R+38
- Quarry, IA R+38
- Dunbar, IA R+37
- Traer, IA R+27
Cities with Similar Populations
- Hornbrook, CA R+40
- Blounts Creek, NC R+34
- Willseyville, NY R+21
- West Cape May, NJ D+10
- North Ferrisburgh, VT D+23
- Walhonding, OH R+66
- Dysart, PA R+56
- Murrayville, IL R+55
- Sedalia, NC R+3
- Weyerhaeuser, WI R+38
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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.