The 100th United States Congress began on January 3, 1987. There were 12 new senators (ten Democrats, two Republicans) and 50 new representatives (27 Democrats, 23 Republicans) at the start of the first session. Additionally, one senator (a Republican) and eight representatives (five Democrats, three Republicans) took office on various dates in order to fill vacancies during the 100th Congress before it ended on January 3, 1989.
Senate Took office January 3, 1987 State Image Senator Seniority Switched party Prior background Birth year Ref Alabama (D) (94th overall) Yes U.S. House of RepresentativesAlabama Senate 1934 Arizona (R) (96th overall) No U.S. House of RepresentativesU.S. Navy Captain 1936 Colorado (D) (91st overall) No U.S. House of RepresentativesU.S. Army Reserve 1939 Florida (D) (98th overall) Yes Governor of FloridaFlorida SenateFlorida House of Representatives 1936 Georgia (D) (93rd overall) Yes U.S. House of RepresentativesAtlanta City CouncilU.S. Army 1940 Louisiana (D) (89th overall) No U.S. House of Representatives 1944 Maryland (D) (92nd overall) Yes U.S. House of RepresentativesBaltimore City Council 1936 Missouri (R) (99th overall) Yes Governor of MissouriState Auditor of Missouri 1939 Nevada (D) (97th overall) Yes U.S. House of RepresentativesChair of the Nevada Gaming CommissionLieutenant Governor of NevadaNevada Assembly 1939 North Dakota (D–NPL) (100th overall) Yes North Dakota Tax Commissioner 1948 South Dakota (D) (95th overall) Yes U.S. House of RepresentativesU.S. Air Force 1947 Washington (D) (90th overall) Yes U.S. Secretary of TransportationU.S. House of RepresentativesU.S. Attorney for W.D. Wash.U.S. Navy 1927
Took office during the 100th Congress State Image Senator Took office Switched party Prior background Birth year Ref Nebraska (R) Yes Federal Home Loan Bank of Topeka 1948
House of Representatives Took office January 3, 1987 District Representative Switched party Prior background Birth year Ref (D) No State Circuit Judge 1940 (R) No Lawyer 1943 (R) No Attorney 1942 (R) No State Assemblyman 1945 (R) No State Assemblyman 1937 (R) No Mayor of Simi Valley 1944 (D) No State Representative 1943 (D) Yes State Representative 1933 (R) No State Senator 1935 (D) No State Senator 1943 (D) No City Councilor 1940 (R) Yes State Senator 1930 (R) No State Representative 1935 (R) No State Representative 1942 (D) Yes State Senator 1951 (D) Yes State Party Chair 1943 (R) Yes Actor 1948 (R) No State Senator 1931 (R) No State Representative 1948 (D) No Lawyer 1946 (R) Yes Businessman 1943 (D) Yes Governor of Maine 1934 (D) No State House Speaker 1943 (D) Yes Professional basketball player 1952 (D) No City Councilor 1948 (R) Yes State Delegate 1931 (D) No President of Citizens Energy Corporation 1952 (R) No Congressional staffer 1953 (D) Yes Attorney 1953 (R) Yes State Representative 1940 (D) No State Senator 1938 (D) Yes State Assemblyman 1938 (D) No Pastor 1945 (D) Yes State Assemblywoman 1929 (R) Yes Business executive 1926 (D) No State Representative 1943 (D) Yes Professor 1940 (R) No State Senator 1926 (D) Yes U.S. Representative 1917 (R) No State Senator 1931 (D) No Mayor of Akron 1945 (R) Yes Mayor of Tulsa 1934 (D) No County Commissioner 1947 (R) Yes County Councilor 1947 (R) No State Senator 1927 (D) Yes State Senator 1939 (D) No State Senator 1946 (R) No County Commissioner 1947 (D) Yes U.S. Representative 1937 (D) Yes State Delegate 1930
Took office during the 100th Congress District Representative Took office Switched party Prior background Birth year Ref (D) No State Party Chair 1940 (R) No State Representative 1945 (D) No President of Cumberland University 1943 (R) Yes Congressional staffer 1949 (D) No Business executive 1945 (D) No County Board Member 1949 (D) No State Senator 1951 (R) No County Court Judge 1947
See also List of United States representatives in the 100th Congress List of United States senators in the 100th Congress
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