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List of Majority and Minority Leaders of the United States Senate
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List of Majority and Minority Leaders of the United States Senate

The members of each of the two major parties in the United States Senate (Democratic and Republican) elects Floor Leaders who lead that party's members in the upper house of the United States Congress. Thus, there is always a Democratic leader and a Republican leader in the Senate. Depending on which party has the majority in the Senate, one of these becomes the majority leader and one becomes the minority leader.

The Democratic Party first selected a Senate floor leader in 1920. The Republican Party first formally designated a floor leader in 1925.

List of Democratic and Republican Leaders in the United States Senate

(Bold type indicates Majority Leader)

Congress Dates Democratic Leader State Republican Leader State
66th 1920-1921 Oscar W. Underwood Alabama Henry Cabot Lodge I (unofficial) Massachusetts
67th 1921-1923 Oscar W. Underwood Alabama Henry Cabot Lodge I (unofficial) Massachusetts
68th 1923-9 Nov. 1924 Joseph T. Robinson Arkansas Henry Cabot Lodge I (unofficial) Massachusetts
68th 5 March 1925- Joseph T. Robinson Arkansas Charles Curtis Kansas
69th 1925-1927 Joseph T. Robinson Arkansas Charles Curtis Kansas
70th 1927-1929 Joseph T. Robinson Arkansas Charles Curtis Kansas
71st 1929-1931 Joseph T. Robinson Arkansas James E. Watson Indiana
72nd 1931-1933 Joseph T. Robinson Arkansas James E. Watson Indiana
73rd 1933-1935 Joseph T. Robinson Arkansas Charles L. McNary Oregon
74th 1935-1937 Joseph T. Robinson Arkansas Charles L. McNary Oregon
75th 1937-14 July 1937 Joseph T. Robinson Arkansas Charles L. McNary Oregon
75th 22 July 1937-1939 Alben W. Barkley Kentucky Charles L. McNary Oregon
76th 1939 Alben W. Barkley Kentucky Charles L. McNary Oregon
76th 1940 Alben W. Barkley Kentucky Warren R. Austin (acting) Vermont
77th 1941-1943 Alben W. Barkley Kentucky Charles L. McNary Oregon
78th 1943-1945 Alben W. Barkley Kentucky Wallace H. White Jr (acting) Maine
79th 1945-1947 Alben W. Barkley Kentucky Wallace H. White Jr Maine
80th 1947-1949 Alben W. Barkley Kentucky Wallace H. White Jr Maine
81st 1949-1951 Scott W. Lucas Illinois Kenneth S. Wherry Nebraska
82nd 1951-29 Nov. 1951 Ernest W. McFarland Arizona Kenneth S. Wherry Nebraska
82nd 8 Jan. 1952-1953 Ernest W. McFarland Arizona H. Styles Bridges New Hampshire
83rd 1953-4 Aug. 1953 Lyndon B. Johnson Texas Robert A. Taft I Ohio
83rd 4 Aug. 1953-1955 Lyndon B. Johnson Texas William F. Knowland California
84th 1955-1957 Lyndon B. Johnson Texas William F. Knowland California
85th 1957-1959 Lyndon B. Johnson Texas William F. Knowland California
86th 1959-1961 Lyndon B. Johnson Texas Everett M. Dirksen Illinois
87th 1961-1963 Michael J. Mansfield Montana Everett M. Dirksen Illinois
88th 1963-1965 Michael J. Mansfield Montana Everett M. Dirksen Illinois
89th 1965-1967 Michael J. Mansfield Montana Everett M. Dirksen Illinois
90th 1967-1969 Michael J. Mansfield Montana Everett M. Dirksen Illinois
91st 1969-7 Sept. 1969 Michael J. Mansfield Montana Everett M. Dirksen Illinois
91st 24 Sept. 1969-1971 Michael J. Mansfield Montana Hugh D. Scott Jr Pennsylvania
92nd 1971-1973 Michael J. Mansfield Montana Hugh D. Scott Jr Pennsylvania
93rd 1973-1975 Michael J. Mansfield Montana Hugh D. Scott Jr Pennsylvania
94th 1975-1977 Michael J. Mansfield Montana Hugh D. Scott Jr Pennsylvania
95th 1977-1979 Robert C. Byrd West Virginia Howard H. Baker Jr Tennessee
95th 1977-1979 Robert C. Byrd West Virginia Howard H. Baker Jr Tennessee
96th 1979-1981 Robert C. Byrd West Virginia Howard H. Baker Jr Tennessee
97th 1981-1983 Robert C. Byrd West Virginia Howard H. Baker Jr Tennessee
98th 1983-1985 Robert C. Byrd West Virginia Howard H. Baker Jr Tennessee
99th 1985-1987 Robert C. Byrd West Virginia Robert J. Dole Jr Kansas
100th 1987-1989 Robert C. Byrd West Virginia Robert J. Dole Jr Kansas
101st 1989-1991 George J. Mitchell Maine Robert J. Dole Jr Kansas
102nd 1991-1993 George J. Mitchell Maine Robert J. Dole Jr Kansas
103rd 1993-1995 George J. Mitchell Maine Robert J. Dole Jr Kansas
104th 2 Dec. 1994-12 June 1996 Thomas A. Daschle South Dakota Robert J. Dole Jr Kansas
104th 12 June 1996-1997 Thomas A. Daschle South Dakota C. Trent Lott Mississippi
105th 1997-1999 Thomas A. Daschle South Dakota C. Trent Lott Mississippi
106th 1999-2001 Thomas A. Daschle South Dakota C. Trent Lott Mississippi
107th 3 Jan. 2001-20 Jan. 2001 Thomas A. Daschle South Dakota C. Trent Lott Mississippi
107th 20 Jan. 2001-6 June 2001 Thomas A. Daschle South Dakota C. Trent Lott Mississippi
107th 6 June 2001-20 Dec. 2002 Thomas A. Daschle South Dakota C. Trent Lott Mississippi
107th 23 Dec. 2002-2003 Thomas A. Daschle South Dakota William H. Frist Tennessee
108th 2003-2005 Thomas A. Daschle South Dakota William H. Frist Tennessee

See also: Speaker of the United States House of Representatives, Minority Leader of the United States House of Representatives