1970 United States Congressional Elections – South Dakota

United States House of Representatives – District 1 – DEM Gain

Frank E. Denholm (D) – 71,636 – 55.98%

Dexter H. Gunderson (R) – 56,330 – 44.02%

Total Votes – 127,966 – 100.00%

United States House of Representatives – District 2 – DEM Gain

James Abourezk (D) – 55,925 – 52.26%

Fred D. Brady (R) – 51,092 – 47.74%

Total Votes – 107,017 – 100.00%

Source: Office of the Clerk of the United States House of Representatives