Of the 2 South Dakota incumbents, 1 was re-elected and 1 retired.
|South Dakota 1||Frank E. Denholm||Democratic||1970||Incumbent re-elected.||? Frank E. Denholm (Democratic) 60.5%|
John Vickerman (Republican) 39.5%
|South Dakota 2||James Abourezk||Democratic||1970||Retired to run for U.S. Senator.
New member elected.
|? James Abdnor (Republican) 54.9%|
Pat McKeever (Democratic) 45.1%