2018 general · November 6, 2018
2018 South Dakota State Senate election results, district by district
Every South Dakota State Senate district in the 2018 general election: winners, margins, unopposed seats and seats that changed party.
Seats after the election
Republicans controlled the chamber · 35 seats
After the electionD 5 · R 30
Races35
Changed party1
Unopposed9%3 races
Incumbents defeated0
Every district
D 5 · R 30
| Race | Winner | Won by | Notes |
|---|---|---|---|
| LD-1 | Susan Wismer (D) | Unopposed | |
| LD-2 | Brock L. Greenfield (R) | 34.4 | |
| LD-3 | Al Novstrup (R) | 17.0 | |
| LD-4 | John Wilk (R) | 29.7 | |
| LD-5 | Lee Schoenbeck (R) | Unopposed | |
| LD-6 | Ernie Otten (R) | 30.2 | |
| LD-7 | V. J. Smith (R) | 22.3 | |
| LD-8 | Jordan Youngberg (R) | 10.4 | |
| LD-9 | Wayne H. Steinhauer (R) | 13.3 | |
| LD-10 | Maggie Sutton (R) | 19.1 | |
| LD-11 | Jim Stalzer (R) | 20.8 | |
| LD-12 | R. Blake Curd (R) | 0.3 | |
| LD-13 | Jack Kolbeck (R) | 8.3 | |
| LD-14 | Deb Soholt (R) | 21.0 | |
| LD-15 | Reynold F. Nesiba (D) | Unopposed | |
| LD-16 | Jim Bolin (R) | 37.0 | |
| LD-17 | Arthur Rusch (R) | 22.3 | |
| LD-18 | Craig Kennedy (D) | 5.3 | |
| LD-19 | Stace Nelson (R) | 48.1 | |
| LD-20 | Joshua Klumb (R) | 45.0 | |
| LD-21 | Rocky Blare (R) | 9.9 | Flipped |
| LD-22 | Jim White (R) | 45.3 | |
| LD-23 | Justin R. Cronin (R) | 65.1 | |
| LD-24 | Jeff Monroe (R) | 33.0 | |
| LD-25 | Kris Langer (R) | 48.3 | |
| LD-26 | Troy Heinert (D) | 6.1 | |
| LD-27 | Red Dawn Foster (D) | 17.1 | |
| LD-28 | Ryan M. Maher (R) | 35.6 | |
| LD-29 | Gary Cammack (R) | 43.0 | |
| LD-30 | Lance Russell (R) | 31.6 | |
| LD-31 | Bob Ewing (R) | 30.5 | |
| LD-32 | Alan Solano (R) | 24.4 | |
| LD-33 | Phil Jensen (R) | 24.7 | |
| LD-34 | Jeff Partridge (R) | 25.4 | |
| LD-35 | Lynne Disanto (R) | 24.0 |
South Dakota State Senate
Results are each source's final count; margins are the winner's lead over the runner-up in points of the vote. Source: MIT Election Data and Science Lab