58643 is a Republican stronghold. About 13% of voters here vote Democratic and 87% Republican.
About 67% of adults in 58643 typically vote, near the U.S. average of about 62%. Among adults in 58643, ~9% vote Democratic, ~58% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How 58643 compares
58643 runs about 38 points more Republican than North Dakota as a whole.
Why 58643 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 58643, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. 58643 sits in the bottom quarter on density and about 94% of residents are non-Hispanic white, about 7 points above the North Dakota average of 87%.
Developed land and Republican lean
Places with a rural land-use pattern tend to lean Republican; 58643, ND sits in the bottom tenth nationally on this measure. Developed land does not change how people vote; it mostly reflects how urban a place is.
Why turnout in 58643 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 58643 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 64%, above 61% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
Sources and methodology
Precinct-level voting records used to fit the model come from North 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.