New Underwood is a Republican stronghold. About 15% of voters here vote Democratic and 85% Republican.
About 61% of adults in New Underwood typically vote, near the U.S. average of about 62%. Among adults in New Underwood, ~9% vote Democratic, ~52% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How New Underwood compares
Among cities within 25 miles, New Underwood leans more Republican than 10 of 16 neighbors.
New Underwood runs about 40 points more Republican than South Dakota as a whole.
Politics vary noticeably by neighborhood within New Underwood. The northeast side is the most Republican-leaning (R+79) and the southwest side is the least Republican-leaning (R+66), a spread of about 13 points.
Why New Underwood leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in New Underwood. The lean here lands roughly where demographic data alone would predict.
Cholesterol-screening access and voter turnout
Places with low cholesterol-screening access tend to turn out at a lower rate; New Underwood, SD sits in the bottom quarter nationally on this measure. Cholesterol screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in New Underwood looks the way it does
Turnout in New Underwood 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
- Viewfield, SD R+77
- Caputa, SD R+67
- Farmingdale, SD R+66
- Wicksville, SD R+79
- Box Elder, SD R+59
- Ellsworth Afb, SD R+26
- Ashland Heights, SD R+46
- Rapid Valley, SD R+39
- Wasta, SD R+76
Cities with Similar Populations
- Embarrass, WI R+51
- Lewis, NC D+4
- Richmond Dale, OH R+57
- West Rockport, ME D+18
- Turtlepoint, PA R+58
- Cedar Mountain, NC R+22
- Ames, TX D+2
- Greers Ferry, AR R+64
- Cassville, TN R+69
- Ancram, NY D+11
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.