Peno, SD Political Map | Democrat & Republican Areas in Peno

By the BestNeighborhood data science team. Last updated May 2026.

Peno leans slightly Republican by roughly 6 points: about 47% of voters vote Democratic and 53% Republican.

 

About 51% of adults in Peno typically vote, below the U.S. average of about 62%. Among adults in Peno, ~24% vote Democratic, ~27% Republican, and ~49% don't vote. The map below shows estimated turnout by block group.

How Peno compares

Among cities within 25 miles, Peno leans more Republican than 3 of 14 neighbors.

Peno runs about 24 points more Democratic than South Dakota as a whole.

Politics vary noticeably by neighborhood within Peno. The southeast side runs the most Democratic (D+43) and the northeast side runs the most Republican (R+63), a spread of about 106 points.

Why Peno leans the way it does

Density, race composition, education, and family structure all sit close to their national averages in Peno. The lean here lands roughly where demographic data alone would predict.

Population density, never-married share, and Republican lean

Places that combine low population density and a never-married-heavy adult population tend to lean Republican, as Peno, SD does.

Why turnout in Peno looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Peno is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 39% of households in Peno rent, above 94% of cities. High-crime urban areas turn out at lower rates, and Peno sits in the top 15% on a violent-crime measure. Learn more about the findings and methodology on the political spectrum map.

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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.