1978 general · November 7, 1978
1978 South Dakota election results
Every race on South Dakota's ballot in the 1978 general election: winners, margins and seats that changed party.
Races60
Changed party4
Unopposed13%8 races
Incumbents defeated16
U.S. Senate
R 1
| Race | Winner | Won by | Notes |
|---|---|---|---|
| South Dakota | Larry Pressler (R) | 33.7 |
Governors
R 1
| Race | Winner | Won by | Notes |
|---|---|---|---|
| South Dakota | William Janklow (R) | 13.3 |
U.S. House
D 1 · R 1 · 1 changed party
| Race | Winner | Won by | Notes |
|---|---|---|---|
| SD-1 | Thomas Daschle (D) | 0.1 | Flipped |
| SD-2 | James Abdnor (R) | 12.1 |
South Dakota State Senate
D 8 · R 14 · Uncalled 6 · 3 changed party
| Race | Winner | Won by | Notes |
|---|---|---|---|
| LD-1 | No winner recorded | Unopposed | Incumbent lost |
| LD-2 | Frances S. Lamont (R) | 7.8 | Incumbent lost |
| LD-3 | Harold Halverson (R) | 9.3 | |
| LD-4 | Jake Krull (D) | 12.3 | |
| LD-5 | Mary McClure (R) | 22.0 | |
| LD-6 | No winner recorded | Unopposed | Incumbent lost |
| LD-7 | Henry A. Poppen (R) | 28.7 | |
| LD-8 | Paul S. Tschetter (D) | 4.7 | FlippedIncumbent lost |
| LD-9 | Milton E. Nelson (R) | 15.9 | |
| LD-10 | Harold Schreier (D) | 10.6 | |
| LD-11 | Richard D. Flynn (R) | 0.6 | Incumbent lost |
| LD-12 | Harold Anderson (R) | 1.6 | Flipped |
| LD-13 | Eugene R. Mahan (D) | 34.2 | |
| LD-14 | No winner recorded | Unopposed | Incumbent lost |
| LD-15 | Donald C. Peterson (R) | 20.1 | |
| LD-16 | Carrol Allen (D) | 11.4 | Flipped |
| LD-17 | George Shanard (R) | 26.7 | |
| LD-18 | Philip Testerman (D) | 14.2 | |
| LD-19 | Robert Hoffman (R) | 4.9 | |
| LD-20 | No winner recorded | Unopposed | |
| LD-21 | William L. Grams (R) | 37.9 | |
| LD-22 | G. Homer Harding (R) | 33.3 | |
| LD-23 | No winner recorded | Unopposed | |
| LD-24 | Doris Miner (D) | 32.8 | |
| LD-25 | Marshall J. Truax (D) | 6.0 | |
| LD-26 | No winner recorded | Unopposed | Incumbent lost |
| LD-27 | Lyndell Petersen (R) | 0.8 | Incumbent lost |
| LD-28 | Eldon S. Jensen (R) | 8.7 |
South Dakota House of Representatives
D 21 · R 33 · Uncalled 4
| Race | Winner | Won by | Notes |
|---|---|---|---|
| LD-1 | Bertrum E. Ellingson · Kent E. Frerichs (D) | 4.8 | |
| LD-2 | Joseph Barnett · R. Lars Herseth · Royal J. Wood · David S. Lausten (REP) | 2.2 | |
| LD-3 | Robert Weber · T. Loren Christianson (R) | 15.1 | |
| LD-4 | James Endres · Doris Kumm (DEM) | 1.0 | |
| LD-5 | Maurice A. Olson · Willis Danekas (D) | 7.6 | |
| LD-6 | George S. Mickelson · Wayne Hauschild (REP) | 1.7 | |
| LD-7 | Gene Warkenthien · Milton Lakness (R) | 9.8 | |
| LD-8 | Robert Eichman · Leland Kleinsasser (R) | 2.7 | |
| LD-9 | Clyde E. Streff · John V. Terveen (R) | 0.2 | Incumbent lost |
| LD-10 | Jerome B. Lammers · Andrew Wiese (REP) | 5.9 | |
| LD-11 | Bart Kull · Walt Bones Jr. (R) | 0.0 | Incumbent lost |
| LD-12 | Marvin Skie · O. L. Anderson (R) | 9.2 | |
| LD-13 | Tim Johnson · Mary B. Edelen (DEM) | 0.5 | |
| LD-14 | No winner recorded | Unopposed | Incumbent lost |
| LD-15 | Francis R. Thieman · Frank J. Brady (REP) | 0.5 | Incumbent lost |
| LD-16 | Albert Kocer · Ralph Nachtigal (D) | 14.7 | |
| LD-17 | Dennis Pierson · Dale Anderson (DEM) | 0.6 | Incumbent lost |
| LD-18 | James A. Burg · Ronald K. Miller (DEM) | 2.7 | |
| LD-19 | Gene Robbennolt · Andy J. Barondeau (D) | 4.3 | Incumbent lost |
| LD-20 | No winner recorded | Unopposed | Incumbent lost |
| LD-21 | Walter D. Miller · George E. Blair (R) | 12.1 | |
| LD-22 | Benny J. Gross · Neil Clarke (R) | 10.2 | |
| LD-23 | Glenn Freeman · William Decker (REP) | 0.5 | |
| LD-24 | Harold Sieh · William F. Cerny (REP) | 0.3 | |
| LD-25 | Violet Biever · Joel Richenbach (DEM) | 5.1 | |
| LD-26 | Kay S. Jorgensen · Reed C. Richards (REP) | 3.2 | |
| LD-27 | Don Ham · Gordon R. Pederson (R) | 0.3 | Incumbent lost |
| LD-28 | John L. Brown · G. F. Mortimer (R) | 9.6 |
South Dakota
Results are each source's final count; margins are the winner's lead over the runner-up in points of the vote. Source: Algara, Carlos; Amlani, Sharif (Harvard Dataverse); Harvard Dataverse / Carl Klarner; MIT Election Data and Science Lab