Ridgeport leans Republican by roughly 28 points: about 36% of voters vote Democratic and 64% Republican.
About 83% of adults in Ridgeport typically vote, above the U.S. average of about 62%. Among adults in Ridgeport, ~30% vote Democratic, ~53% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How Ridgeport compares
Among cities within 25 miles, Ridgeport leans more Republican than 13 of 50 neighbors.
Ridgeport runs about 14 points more Republican than Iowa as a whole.
Politics vary noticeably by neighborhood within Ridgeport. The northeast side is the most Republican-leaning (R+46) and the east side is the least Republican-leaning (R+25), a spread of about 22 points.
Why Ridgeport leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Ridgeport. 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; Ridgeport, IA sits in the bottom quarter nationally on this measure.
Why turnout in Ridgeport looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Ridgeport 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 Ridgeport have completed high school, above 86% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Fraser, IA R+32
- Pilot Mound, IA R+44
- Stratford, IA R+39
- Mackey, IA R+26
- Boone, IA R+18
- Logansport, IA R+40
- Stanhope, IA R+45
- Jordan, IA R+25
- Dayton, IA R+42
- Boxholm, IA R+44
Cities with Similar Populations
- Yocemento, KS R+67
- Upper Gloucester, ME R+16
- Hawk Springs, WY R+80
- Brooksburg, IN R+52
- Fort McAllister, GA R+44
- Fox, VA R+56
- West Jersey, IL R+54
- Folk, MO R+75
- Talleyrand, IA R+50
- Lake McMurray, WA R+5
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.