There were elections in 1971 to the United States House of Representatives:
|- ! | colspan=3 | Vacant| | District elected first delegate since the seat was re-established during previous congress.
Democratic gain.| nowrap |
|- ! | colspan=3 | Vacant| | Incumbent L. Mendel Rivers (D) died during previous congress.
New member elected April 27, 1971.
Democratic hold.| nowrap |
|- ! | Rogers Morton| | 1962| | Incumbent resigned January 29, 1971, after being appointed U.S. Secretary of the Interior.
New member elected May 25, 1971.
Republican hold.| nowrap |
|- ! | Robert J. Corbett| | 1938
1940 (lost)
1944| | Incumbent died April 25, 1971.
New member elected November 2, 1971.
Republican hold.| nowrap |
|-! | John C. Watts| | | | Incumbent died September 24, 1971.
New member elected December 4, 1971.
Democratic hold.| nowrap | |}