Dexter leans heavily Republican by roughly 36 points: about 32% of voters vote Democratic and 68% Republican.
About 75% of adults in Dexter typically vote, above the U.S. average of about 62%. Among adults in Dexter, ~24% vote Democratic, ~51% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How Dexter compares
Among cities within 25 miles, Dexter leans more Republican than 13 of 40 neighbors.
Dexter runs about 22 points more Republican than Iowa as a whole.
Politics vary noticeably by neighborhood within Dexter. The southwest side is the most Republican-leaning (R+52) and the east side is the least Republican-leaning (R+30), a spread of about 22 points.
Why Dexter 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 Dexter, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 76% of households in Dexter are family households, about 10 points above the U.S. average of 67%.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Dexter, 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 Dexter looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Dexter 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 71%, about 11 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 97% of adults in Dexter have completed high school, above 87% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Stuart, IA R+44
- Wiscotta, IA R+31
- Redfield, IA R+36
- Earlham, IA R+41
- Dale, IA R+41
- Menlo, IA R+43
- Linden, IA R+38
- Pitzer, IA R+48
- Howe, IA R+52
- DeSoto, IA R+32
Cities with Similar Populations
- Ahwahnee, CA R+30
- Sudlersville, MD R+50
- Thomas, OK R+69
- Teals Crossroads, AL R+29
- Casnovia, MI R+44
- Seal Rock, OR D+7
- Hemlock, NY R+26
- Cayuga, NY R+29
- Loleta, CA Even
- Lorman, MS D+74
All Local Stats
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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.