Callender is a Republican stronghold. About 25% of voters here vote Democratic and 75% Republican.
About 71% of adults in Callender typically vote, above the U.S. average of about 62%. Among adults in Callender, ~18% vote Democratic, ~53% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How Callender compares
Among cities within 25 miles, Callender leans more Republican than 32 of 51 neighbors.
Callender runs about 37 points more Republican than Iowa as a whole.
Why Callender 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 Callender, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 89% of residents in Callender drive to work alone, about 16 points above the U.S. average of 74%.
Population density and Republican lean
Places with low population density tend to lean Republican; Callender, IA sits in the bottom quarter nationally on this measure.
Why turnout in Callender looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Callender 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 68%, about 8 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 92% of households in Callender own their home, about 17 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 98% of adults in Callender have completed high school, above 93% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Slifer, IA R+52
- Roelyn, IA R+52
- Roberts, IA R+50
- Moorland, IA R+52
- Gowrie, IA R+46
- Palm Grove, IA R+48
- Somers, IA R+57
- Otho, IA R+44
- Farnhamville, IA R+54
- Burnside, IA R+42
Cities with Similar Populations
- Locust Corners, MI R+53
- San Perlita, TX R+45
- North Milford, MA D+10
- Zamora, NM R+8
- Daleville, PA R+28
- Courtland, CA R+5
- Kremlin, OK R+74
- Lechee, AZ D+11
- Eleroy, IL R+41
- Hunt, AR R+63
All Local Stats
Home Services
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.