Arco leans heavily Republican by roughly 50 points: about 25% of voters vote Democratic and 75% Republican.
About 69% of adults in Arco typically vote, above the U.S. average of about 62%. Among adults in Arco, ~17% vote Democratic, ~52% Republican, and ~31% don't vote. The map below shows estimated turnout by block group.
How Arco compares
Among cities within 25 miles, Arco leans more Republican than 9 of 25 neighbors.
Arco runs about 54 points more Republican than Minnesota as a whole. Minnesota leans Democratic overall, while Arco is one of the few Republican-leaning pockets.
Why Arco 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 Arco, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. Arco sits in the bottom quarter on density and about 97% of residents are non-Hispanic white, about 12 points above the Minnesota average of 86%. Arco runs against the grain of Minnesota, a Republican-leaning pocket in a Democratic-leaning state.
Population density and Republican lean
Places with low population density tend to lean Republican; Arco, MN sits in the bottom tenth nationally on this measure.
Why turnout in Arco looks the way it does
Homeowners vote more often than renters. About 92% of households in Arco own their home, about 10 points above the Minnesota average of 82%. High high-school completion lines up with higher turnout, and about 97% of adults in Arco have completed high school, above 89% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Ivanhoe, MN R+48
- Tyler, MN R+50
- Lake Benton, MN R+50
- Russell, MN R+57
- Florence, MN R+55
- Wilno, MN R+48
- Lynd, MN R+51
- Burchard, MN R+56
- Hendricks, MN R+45
- Verdi, MN R+57
Cities with Similar Populations
- Charlotteville, NY R+33
- St. Marks, KS R+62
- Mc Clure, VA R+69
- Selmore, MO R+63
- Lucerne, CO R+47
- Bethlehem, OH R+58
- Blanford, IN R+57
- East Thorndike, ME R+29
- Buford, WY R+51
- Webb, OH R+54
All Local Stats
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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.