Sioux Valley leans heavily Republican by roughly 42 points: about 29% of voters vote Democratic and 71% Republican.
About 64% of adults in Sioux Valley typically vote, near the U.S. average of about 62%. Among adults in Sioux Valley, ~19% vote Democratic, ~45% Republican, and ~36% don't vote. The map below shows estimated turnout by block group.
How Sioux Valley compares
Among cities within 25 miles, Sioux Valley leans more Republican than 23 of 26 neighbors.
Sioux Valley runs about 45 points more Republican than Minnesota as a whole. Minnesota leans Democratic overall, while Sioux Valley is one of the few Republican-leaning pockets.
Why Sioux Valley 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 Sioux Valley, not a ranked or complete list of what matters most.
Sioux Valley votes against the grain of Minnesota. Minnesota leans Democratic overall, while Sioux Valley runs about 45 points more Republican. A high family-household share predicts Republican voting, and about 76% of households in Sioux Valley are family households, above 80% of cities.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Sioux Valley, MN sits in the top tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Sioux Valley looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Sioux Valley 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 10 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 91% of households in Sioux Valley own their home, about 16 points above the U.S. average of 75%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Lake Park, MN R+35
- Audubon, MN R+40
- Rollag, MN R+27
- Hawley, MN R+30
- Hitterdal, MN R+35
- Lake Eunice, MN R+36
- Callaway, MN R+48
- Westbury, MN R+41
- Shoreham, MN R+32
- Detroit Lakes, MN R+26
Cities with Similar Populations
- Swedesburg, IA R+46
- Middle Amana, IA R+33
- Lyells, VA R+10
- Vandenberg Air Force Base, CA D+3
- Coomer, WI R+27
- Navarro, CA D+42
- Keeter, TX R+75
- Ervintown, NC R+47
- Propstburg, WV R+63
- Circleville, WV R+69
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Sources and methodology
Precinct-level voting records used to fit the model come from Minnesota 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.