Grover is a Republican stronghold. About 17% of voters here vote Democratic and 83% Republican.
About 86% of adults in Grover typically vote, above the U.S. average of about 62%. Among adults in Grover, ~15% vote Democratic, ~71% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.
How Grover compares
Among cities within 25 miles, Grover leans more Republican than 24 of 29 neighbors.
Grover runs about 37 points more Republican than South Dakota as a whole.
Politics vary noticeably by neighborhood within Grover. The southeast side is the most Republican-leaning (R+78) and the east side is the least Republican-leaning (R+58), a spread of about 20 points.
Why Grover 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 Grover, not a ranked or complete list of what matters most.
Areas with a high white share and below-average college attainment vote Republican. In Grover, about 99% of residents are non-Hispanic white, about 26 points above the U.S. average of 72%; about 16% of adults hold a bachelor's degree, about 9 points below the South Dakota average of 26%. Rural areas vote Republican, and Grover sits in the bottom quarter on density (about 5%, below 80% of cities).
Population density and Republican lean
Places with low population density tend to lean Republican; Grover, SD sits in the bottom tenth nationally on this measure.
Why turnout in Grover looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Grover 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 70%, about 10 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Grover have completed high school, above 93% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Thomas, SD R+78
- Kampeska, SD R+57
- Foley, SD R+54
- Hazel, SD R+74
- Henry, SD R+58
- Kones Corner, SD R+65
- Watertown, SD R+40
- Hayti, SD R+73
- Vienna, SD R+64
- Rauville, SD R+56
Cities with Similar Populations
- Womack, LA R+82
- Sturdivant, MO R+74
- Sugar Pine, CA R+15
- Clyde, PA R+56
- Lyons, IA R+39
- Cross Roads, MO R+71
- Brotherton, PA R+63
- South Hill, KY R+64
- Possum Trot, KY R+54
- Peters Prairie, TX R+44
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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.