South Dakota House of Representatives seat · lines in effect since 2022
South Dakota Legislative District 15
A district of about 24,000 people, 24% of adults with a bachelor's degree. It votes D+3.1 relative to the nation for president.
Where it sits among all 34 seats
Every South Dakota House of Representatives seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2016 | 2020 | 2022 | 2024 | 2026 | |
|---|---|---|---|---|---|
| U.S. Senate | R+11.7 | R+2.9 | No race | No race | No race |
| South Dakota House of Representatives | No race | No race | D+1.5 | D+0.1 | D+21.3 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: South Dakota Secretary of StateUpdated Nov 7, 2026, 3:01 PM ET
Who lives here, compared
Grey bars show the spread of all 34 seats. Small marks are other seats in South Dakota. The black marker is District 15.
Lower than 70% of seats.
Lower than 58% of seats.
Higher than 97% of seats.
Higher than 97% of seats.
Higher than 67% of seats.
Denser than 82% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 1034% college gradsD+8.8Held DDistrict 11
32% college gradsR+9.5SplitDistrict 32
24% college gradsR+3.2SplitDistrict 9
35% college gradsR+23.4Held R
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who has held it
These lines took effect in 2022.
- June CopperStad (D)
2027– · Won 2026 by 21.3 - Erik Muckey (D)
2025–2027 · Won 2024 by 0.1 - Linda Duba (D)
2023–2025 · Won 2022 by 6.8 - Kadyn Wittman (D)
2023– · Won 2022 by 1.5, 2024 by 2.2, 2026 by 25.9
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)