Audubon County leans heavily Republican by roughly 46 points: about 27% of voters vote Democratic and 73% Republican.
About 90% of adults in Audubon County typically vote, above the U.S. average of about 62%. Among adults in Audubon County, ~24% vote Democratic, ~66% Republican, and ~10% don't vote. The map below shows estimated turnout by block group.
How Audubon County compares
Among counties within 50 miles, Audubon County leans more Republican than 8 of 11 neighbors.
Audubon County runs about 33 points more Republican than Iowa as a whole.
Politics vary noticeably by city within Audubon County. The northeast side is the most Republican-leaning (R+57) and the north side is the least Republican-leaning (R+40), a spread of about 16 points.
Why Audubon County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Audubon County, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 82% of residents in Audubon County drive to work alone, about 9 points above the U.S. average of 74%.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Audubon County, 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 Audubon County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Audubon County 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 67%, about 7 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Shelby County, IA R+48
- Cass County, IA R+41
- Carroll County, IA R+44
- Guthrie County, IA R+41
- Adair County, IA R+46
- Crawford County, IA R+37
- Greene County, IA R+39
- Harrison County, IA R+42
- Adams County, IA R+46
- Montgomery County, IA R+41
Counties with Similar Populations
- Lincoln County, CO R+61
- McCook County, SD R+54
- Gray County, KS R+73
- Bent County, CO R+29
- Alfalfa County, OK R+76
- Ransom County, ND R+46
- Lincoln County, MN R+49
- Putnam County, IL R+28
- Tripp County, SD R+58
- San Saba County, TX R+68
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.