. Robert Daniel (R) . Dan Daniel (D) . M. Caldwell Butler (R) . J. Kenneth Robinson (R) . Herbert Harris (D) . William C. Wampler (R) . Joseph L. Fisher (D) Washington . Joel Pritchard (R) . Lloyd Meeds (D) . Don Bonker (D) . Mike McCormack (D) . Tom Foley (D) . Norm Dicks (D) . Brock Adams (D), until January 22, 1977 John E. Cunningham (R) from May 17, 1977 West Virginia . Bob Mollohan (D) . Harley Orrin Staggers (D) . John M. Slack Jr. (D) . Nick Rahall (D) Wisconsin . Les Aspin (D) . Robert Kastenmeier (D) . Alvin Baldus (D) . Clement J. Zablocki (D) . Henry S. Reuss (D) . William A. Steiger (R), until December 4, 1978 . Dave Obey (D) . Robert John Cornell (D) . Bob Kasten (R) Wyoming . Teno Roncalio (D), until December 30, 1978 Non-voting members . Walter Fauntroy (D) . Antonio Borja Won Pat (D) . Baltasar Corrada del Río (PNP) . Ron de Lugo (D) Changes in membership The count below reflects changes from the beginning of the first session of this Congress. Senate Replacements: 11 Democratic: 3 seat net loss Republican: 3 seat net gain Deaths: 4 Resignations: 5 Vacancy: 0 Total seats with changes: 9 |- | nowrap | Arkansas(2) | nowrap | John L. McClellan(D) | Died November 28, 1977.Successor appointed to finish the term. | nowrap | Kaneaster Hodges Jr.(D) | December 10, 1977 |- | nowrap | Montana(2) | nowrap | Lee Metcalf(D) | Died January 12, 1978.Successor appointed to finish the term. | nowrap | Paul G. Hatfield(D) | January 22, 1978 |- | nowrap | Minnesota(1) | nowrap | Hubert Humphrey(DFL) | Died January 13, 1978.Successor appointed to continue the term. | nowrap | Muriel Humphrey(D) | January 25, 1978 |- | nowrap | Alabama(3) | nowrap | James Allen(D) | Died June 1, 1978.Successor appointed to continue the term. | nowrap | Maryon Pittman Allen(D) | June 8, 1978 |- | nowrap | Alabama(3) | nowrap | Maryon Pittman Allen(D) | Appointee lost special election.Successor elected November 7, 1978. | nowrap | Donald Stewart(D) | November 8, 1978 |- | nowrap | Minnesota(1) | nowrap | Muriel Humphrey(DFL) | Appointee retired when successor qualified.Successor elected November 7, 1978. | nowrap | David Durenberger(R) | November 8, 1978 |- | nowrap | Montana(2) | nowrap | Paul