1970 general · November 3, 1970
1970 South Dakota election results
Every race on South Dakota's ballot in the 1970 general election: winners, margins and seats that changed party.
Races68
Changed party10
Unopposed24%16 races
Incumbents defeated13
South Dakota State Senate
D 9 · R 20 · 6 changed party
| Race | Winner | Won by | Notes |
|---|---|---|---|
| LD-1 | Curtis Jones (D) | 9.3 | |
| LD-2 | Allen Sperry (D) | 1.7 | FlippedIncumbent lost |
| LD-3 | Louis L. Johnson (R) | 10.1 | |
| LD-4 | Thomas Green (R) | Unopposed | |
| LD-5 | Wilmont M. Uecker (D) | 10.2 | |
| LD-6 | Paul Brown (R) | 21.9 | |
| LD-7 | Henry A. Poppen (R) | 11.7 | |
| LD-8 | Leland L. Steele (R) | 3.3 | |
| LD-9 | Rodney Hall (D) | 5.8 | |
| LD-10 | Harold Schreier (D) | 6.9 | Flipped |
| LD-11 | Holger Anderson (R) | 0.0 | Incumbent lost |
| LD-12 | Robert T. Collingwood (D) | 1.0 | FlippedIncumbent lost |
| LD-13 | Lloyd Schrag (R) | Unopposed | |
| LD-14 | William R. Ripp (R) | Unopposed | |
| LD-15 | Don Bierle (R) | Unopposed | |
| LD-16 | Frank Novotny (D) | Unopposed | |
| LD-17 | A. A. Quintal (R) | 17.6 | |
| LD-18 | Robert Miller (R) | 7.5 | Flipped |
| LD-19 | Harvey Wollman (D) | 26.2 | |
| LD-20 | Eldon L. Smith (R) | 18.4 | |
| LD-21 | A. W. Spiry (R) | Unopposed | |
| LD-22 | William L. Grams (R) | Unopposed | |
| LD-23 | G. Homer Harding (R) | 21.7 | |
| LD-24 | Robert Burns (R) | Unopposed | |
| LD-25 | John P. Flynn (R) | 1.5 | FlippedIncumbent lost |
| LD-26 | Kenneth A. Trask (R) | Unopposed | |
| LD-27 | Joe R. Dunmire (R) | 14.0 | |
| LD-28 | Charles E. Donnelly Jr. (D) | 0.5 | FlippedIncumbent lost |
| LD-29 | Alfred J. Burke (R) | 18.5 |
South Dakota House of Representatives
D 26 · R 38 · 4 changed party
| Race | Winner | Won by | Notes |
|---|---|---|---|
| LD-1 | Harold Millett (R) | 24.7 | |
| LD-2 | G. F. Mortimer (R) | Unopposed | |
| LD-3 | James B. Dunn · James D. Jelbert (R) | 23.9 | |
| LD-4 | Robert J. Knutson · Gene Lebrun (D) | 0.4 | Incumbent lost |
| LD-5 | Charles E. Clay · Edwin K. Barkley (R) | Unopposed | |
| LD-6 | Ira Elwood (D) | 57.1 | |
| LD-7 | William M. Jensen (R) | 4.5 | |
| LD-8 | Harold Sieh · Donald Jorgensen (REP) | 0.2 | Incumbent lost |
| LD-9 | Donald Tracy (D) | 6.1 | FlippedIncumbent lost |
| LD-10 | Carveth S. Thompson · Walter D. Miller (R) | Unopposed | |
| LD-11 | Joseph O. Johnson (R) | 11.5 | |
| LD-12 | James W. Kesling (R) | 1.1 | FlippedIncumbent lost |
| LD-13 | Benny J. Gross · Thomas O. Young (R) | 11.9 | |
| LD-14 | James L. Rothstein (R) | Unopposed | |
| LD-15 | Oscar E. Huber · Dean O. Mehlhaff (R) | 6.9 | |
| LD-16 | Philip Testerman (D) | 18.4 | Flipped |
| LD-17 | Burton Anderson · Robert E. Lyons (D) | Unopposed | |
| LD-18 | Joseph Barnett · Bernie Kopecky · Royal J. Wood · Don Young (REP) | 1.1 | |
| LD-19 | Maurice A. Olson (D) | 17.5 | |
| LD-20 | Willis Danekas · Charles A. Larkin (DEM) | 0.1 | Incumbent lost |
| LD-21 | Kenneth Kauth · Menno Tschetter (D) | 4.9 | |
| LD-22 | Harvey Christensen (D) | 4.4 | FlippedIncumbent lost |
| LD-23 | Dorothy Nepstad · Stanley Johnson (R) | 10.9 | |
| LD-24 | Fred Kaufman · Otto Stern (REP) | Unopposed | |
| LD-25 | Simon Chance (R) | 13.3 | |
| LD-26 | Robert H. Shoemaker · Albert Gunderson (R) | Unopposed | |
| LD-27 | Edwin J. Hadd (R) | 0.3 | |
| LD-28 | Eugene R. Mahan (D) | 8.2 | |
| LD-29 | O. L. Anderson · Joe M. Groseth · Herman Paulson (R) | 3.8 | |
| LD-30 | Michael Oconnor · Robert R. Giebink (DEM) | 0.3 | Incumbent lost |
| LD-31 | Robert Kostboth (R) | 14.7 | |
| LD-32 | Duaine Swenson (D) | 25.5 | |
| LD-33 | Roy M. Johnson · Merwyn H. Walter (D) | 1.1 | |
| LD-34 | Andrew Wiese (D) | 24.2 | |
| LD-35 | John Bibby · Wayne Hauschild (REP) | 1.5 | Incumbent lost |
| LD-36 | Lawrence L. Stalheim · Merle C. Pommer (R) | 8.4 | |
| LD-37 | Donald Osheim · Grant O. Amondson (R) | 4.4 | |
| LD-38 | Woodrow Kermit Hawley · Harold Halverson (DEM) | 2.2 | |
| LD-39 | Bertrum E. Ellingson · Henry I. Knudsen (D) | 5.5 |
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: Harvard Dataverse / Carl Klarner