94th United States Congress Changes in membership Senate

| State_class | Vacator | Reason_for_change | Successor | Date_of_successor_s_formal_installation_ |
|---|---|---|---|---|
| Nebraska , (1) | Roman Hruska , (R) | Resigned December 27, 1976 | Edward Zorinsky , (D) | December 28, 1976 |
| Ohio , (1) | Robert Taft, Jr. , (R) | Resigned December 28, 1976 | Vacant | Not filled this term |
| Rhode Island , (1) | John O. Pastore , (D) | Resigned December 28, 1976 | John Chafee , (R) | December 29, 1976 |
| Minnesota , (2) | Walter Mondale , (DFL) | Resigned December 30, 1976 after being elected Vice-President of the United States. | Wendell Anderson , (DFL) | December 30, 1976 |
| California , (1) | John V. Tunney , (D) | Resigned January 1, 1977 | S. I. Hayakawa , (R) | January 2, 1977 |