1980 general · November 4, 1980
1980 South Dakota State Senate election results, district by district
Every South Dakota State Senate district in the 1980 general election: winners, margins, unopposed seats and seats that changed party.
Seats after the election
Republicans controlled the chamber · 35 seats
After the electionD 10 · R 25
Races28
Changed party6
Unopposed29%8 races
Incumbents defeated4
Every district
D 9 · R 19
| Race | Winner | Won by | Notes |
|---|---|---|---|
| LD-1 | Curtis Jones (D) | Unopposed | |
| LD-2 | Frances S. Lamont (R) | 11.0 | Incumbent lost |
| LD-3 | Harold Halverson (R) | Unopposed | |
| LD-4 | Jake Krull (D) | 9.2 | |
| LD-5 | Mary McClure (R) | 24.3 | |
| LD-6 | John Bibby (R) | Unopposed | |
| LD-7 | Henry A. Poppen (R) | Unopposed | |
| LD-8 | Leland Kleinsasser (R) | 10.8 | Flipped |
| LD-9 | Clyde E. Streff (R) | 22.5 | |
| LD-10 | Wallace B. Hanson (R) | 13.5 | Flipped |
| LD-11 | Michael Oconnor (D) | 0.3 | FlippedIncumbent lost |
| LD-12 | Roger McKellips (D) | 21.3 | Flipped |
| LD-13 | Eugene R. Mahan (D) | 34.4 | |
| LD-14 | William R. Ripp (R) | Unopposed | |
| LD-15 | Donald C. Peterson (R) | 30.2 | |
| LD-16 | Carrol Allen (D) | 8.6 | |
| LD-17 | George Shanard (R) | Unopposed | |
| LD-18 | Robert N. Duxbury (D) | 3.0 | |
| LD-19 | Robert Hoffman (R) | 22.4 | |
| LD-20 | James Stoick (R) | Unopposed | |
| LD-21 | Bob Samuelson (D) | 4.0 | Flipped |
| LD-22 | G. Homer Harding (R) | Unopposed | |
| LD-23 | Marvis T. Hogen (R) | 9.0 | |
| LD-24 | Doris Miner (D) | 22.9 | |
| LD-25 | John D. Manke (R) | 10.2 | FlippedIncumbent lost |
| LD-26 | James B. Dunn (R) | 24.8 | |
| LD-27 | Lyndell Petersen (R) | 1.2 | Incumbent lost |
| LD-28 | John L. Brown (R) | 33.7 |
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: Harvard Dataverse / Carl Klarner