# 1972 United States Senate election in South Dakota

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The 1972 United States Senate election in South Dakota took place on November 7, 1972, concurrently with the U.S. presidential election as well as other elections to the United States Senate in other states as well as elections to the United States House of Representatives and various state and local elections.
Incumbent Republican U.S. Senator Karl E. Mundt, who had suffered a severe stroke in 1969, did not run for re-election to a fifth term and was succeeded by Democratic nominee James Abourezk.
Despite Abourezk's 14 percentage point win, Democratic presidential nominee and future fellow South Dakota Senator George McGovern lost his home state by a margin of 8.6 points in the concurrent presidential election.
South Dakota was one of fifteen states alongside Alabama, Arkansas, Colorado, Delaware, Georgia, Iowa, Louisiana, Maine, Minnesota, Mississippi, Montana, New Hampshire, Rhode Island and West Virginia that were won by Republican President Richard Nixon in 1972 that elected Democrats to the United States Senate.

## Primary elections

Primary elections were held on June 6, 1972.

### Democratic primary
#### Candidates

* James Abourezk, incumbent U.S. Representative for South Dakota's 2nd congressional district
* George Blue, former State Senator and unsuccessful candidate for Democratic nomination for Lieutenant Governor of South Dakota in 1968

#### Results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | James Abourezk | 46,931 | 79.42% |
| | Democratic | George Blue | 12,163 | 20.58% |
| Total votes | Total votes | Total votes | 59,094 | 100.00% |

### Republican primary
#### Candidates

* Robert W. Hirsch, former South Dakota Senate Majority Leader
* Chuck Lien, businessman
* Gordon J. Mydland, incumbent Attorney General of South Dakota
* Tom Reardon, banker
* Kenneth D. Stofferahn, farmer

#### Results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Robert W. Hirsch | 27,322 | 27.37% |
| | Republican | Gordon J. Mydland | 22,297 | 22.34% |
| | Republican | Chuck Lien | 21,995 | 22.03% |
| | Republican | Kenneth D. Stofferahn | 16,615 | 16.65% |
| | Republican | Tom Reardon | 11,592 | 11.61% |
| Total votes | Total votes | Total votes | 99,821 | 100.00% |
A state convention was held June 26 to determine the party's nominee as no candidate received the 35% required for nomination under the state's primary law. Hirsch was nominated at this convention.

## General election
### Candidates

* Robert W. Hirsch (R)
* James Abourezk (D)

### Results

1972 United States Senate election in South Dakota :
| Party | Party | Candidate | Votes | % |
| | Democratic | James Abourezk | 174,773 | 57.04 |
| | Republican | Robert W. Hirsch | 131,613 | 42.96 |
| Majority | Majority | Majority | 43,160 | 14.08 |
| Turnout | Turnout | Turnout | 306,386 | |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |