58329 leans heavily Democratic by roughly 40 points: about 70% of voters vote Democratic and 30% Republican.
About 55% of adults in 58329 typically vote, below the U.S. average of about 62%. Among adults in 58329, ~38% vote Democratic, ~17% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.
How 58329 compares
58329 sits in a sparsely populated area with few comparable zip codes nearby.
58329 runs about 76 points more Democratic than North Dakota as a whole. North Dakota leans Republican overall, while 58329 is one of the few Democratic-leaning pockets.
Politics vary noticeably by block within 58329. The southeast side is the most Democratic-leaning (D+46) and the northwest side is the least Democratic-leaning (D+25), a spread of about 21 points.
Why 58329 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 58329, not a ranked or complete list of what matters most.
58329 votes against the grain of North Dakota. North Dakota leans Republican overall, while 58329 runs about 76 points more Democratic. A high never-married share predicts Democratic voting, and about 44% of adults in 58329 have never been married, above 91% of zip codes.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; 58329, ND sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 58329 looks the way it does
Areas with high food insecurity turn out at lower rates. About 30% of adults in 58329 report food insecurity, about 14 points above the U.S. average of 16%. Renters vote less often than owners, and about 39% of households in 58329 rent, above 86% of zip codes. High-crime urban areas turn out at lower rates, and 58329 sits in the top 15% on a violent-crime measure. 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.