Table:
text: 94th United States Congress
Changes in membership
Senate
State_class Vacator Reason_for_change Successor Date_of_successor_s_formal_installation_
New Hampshire , (3) Vacant Disputed election. Norris Cotton appointed to seat until special election resolved dispute. Norris Cotton , (R) August 8, 1975
New Hampshire , (3) Norris Cotton , (R) Successor elected September 18, 1975 John A. Durkin , (D) September 18, 1975
Michigan , (1) Philip Hart , (D) Died December 26, 1976 Donald W. Riegle, Jr. , (D) December 27, 1976
Missouri , (1) Stuart Symington , (D) Resigned December 27, 1976 John Danforth , (R) December 27, 1976

text: 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

Question: How many full replacements took place in this session of the 94th United States Congress?