Frederick is a Republican stronghold. About 21% of voters here vote Democratic and 79% Republican.
About 64% of adults in Frederick typically vote, near the U.S. average of about 62%. Among adults in Frederick, ~14% vote Democratic, ~50% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How Frederick compares
Among cities within 25 miles, Frederick leans more Republican than 6 of 17 neighbors.
Frederick runs about 29 points more Republican than South Dakota as a whole.
Why Frederick 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 Frederick, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. Frederick sits in the bottom quarter on density and about 98% of residents are non-Hispanic white, about 18 points above the South Dakota average of 81%. A high family-household share predicts Republican voting, and about 77% of households in Frederick are family households, above 83% of cities.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Frederick, SD sits in the bottom quarter nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Frederick looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Frederick 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 72%, about 12 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Barnard, SD R+57
- Ellendale, ND R+50
- Houghton, SD R+57
- Guelph, ND R+62
- Willow, SD R+68
- Spring Creek Colony, SD R+68
- Hecla, SD R+58
- Westport, SD R+55
- Columbia, SD R+59
- Wetonka, SD R+64
Cities with Similar Populations
- Quackenkill, NY R+19
- Farmington Falls, ME R+8
- Ringwood, NC D+65
- Vichy Springs, CA D+26
- Long Bridge, LA R+27
- Milan Center, IN R+64
- Rogers Mesa, CO R+54
- Little Hope, PA R+44
- Painter Creek, OH R+71
- West Bridgton, ME R+17
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Sources and methodology
Precinct-level voting records used to fit the model come from South Dakota 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.