Vienna is a Republican stronghold. About 18% of voters here vote Democratic and 82% Republican.
About 67% of adults in Vienna typically vote, near the U.S. average of about 62%. Among adults in Vienna, ~12% vote Democratic, ~55% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How Vienna compares
Among cities within 25 miles, Vienna leans more Republican than 20 of 27 neighbors.
Vienna runs about 35 points more Republican than South Dakota as a whole.
Politics vary noticeably by neighborhood within Vienna. The east side is the most Republican-leaning (R+78) and the north side is the least Republican-leaning (R+57), a spread of about 21 points.
Why Vienna 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 Vienna, not a ranked or complete list of what matters most.
Rural areas with a high white share vote Republican. Vienna sits in the bottom quarter on density and about 96% of residents are non-Hispanic white, about 16 points above the South Dakota average of 81%.
Paved land cover and Republican lean
Places with little paved surface tend to lean Republican; Vienna, 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 Vienna looks the way it does
Turnout in Vienna sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Hazel, SD R+74
- Willow Lake, SD R+62
- Henry, SD R+58
- Bryant, SD R+70
- Grover, SD R+66
- Garden City, SD R+59
- Clark, SD R+53
- Thomas, SD R+78
- Kampeska, SD R+57
- Hayti, SD R+73
Cities with Similar Populations
- Alum Bridge, WV R+67
- Wishart, MO R+64
- Wonalancet, NH R+6
- Stoneham, TX R+68
- Plain View, VA R+35
- Volga, WV R+64
- Spring Valley Village, TX Even
- Russett, OK R+65
- Bay Springs, AL R+63
- La Clede, IL R+70
All Local Stats
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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.