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Filter by:
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|---|---|---|---|---|---|
| Senator | Years | Senate Service | Party Leader | Majority Leader | Minority Leader |
| Mitch McConnell (R-KY) | 16 | 1985-present | 2007-present | 2015-2021 | 2007-2015; 2021-present |
| Michael J. Mansfield (D-MT) | 16 | 1953-1977 | 1961-1977 | 1961-1977 | – |
| Joseph T. Robinson (D-AR) | 13.5 | 1913-1937 | 1923-1937 | 1933-1937 | 1923-1933 |
| Robert C. Byrd (D-WV) | 12 | 1959-2010 | 1977-1989 | 1977-1981 1987-1989 | 1981-1987 |
| Alben W. Barkley (D-KY) | 12 | 1927-1949 1955-1956 | 1937-1949 | 1937-1947 | 1947-1949 |
| Harry Reid (D-NV) | 12 | 1987-2017 | 2005-2017 | 2007-2015 | 2005-2007 2015-2017 |
| Robert J. Dole (Bob) (R-KS) | 11.5 | 1969-1996 | 1985-1996 | 1985-1987 1995-1996 | 1987-1995 |
| Arthur P. Gorman (D-MD) | 11 | 1881-1899 1903-1906 | 1890-1898 1903-1906 | 1893-1895 | 1890-1893 1895-1898 1903-1906 |
| Charles L. McNary (R-OR) | 11 | 1917-1944 | 1933-1944 | – | 1933-1944 |
| Everett M. Dirksen (R-IL) | 10 | 1951-1969 | 1959-1969 | – | 1959-1969 |
| Thomas A. Daschle (D-SD) | 10 | 1987-2005 | 1995-2005 | 2001-2003 | 1995-2001 2003-2005 |
| Howard H. Baker, Jr. (R-TN) | 8 | 1967-1985 | 1977-1985 | 1981-1985 | 1977-1981 |
| Lyndon B. Johnson (D-TX) | 8 | 1949-1961 | 1953-1961 | 1955-1961 | 1953-1955 |
| Hugh D. Scott, Jr. (R-PA) | 8 | 1959-1977 | 1969-1977 | – | 1969-1977 |
| Trent Lott (R-MS) | 6.5 | 1989-2007 | 1996-2003 | 1996-2001 | 2001-2003 |
| George J. Mitchell (D-ME) | 6 | 1980-1995 | 1989-1995 | 1989-1995 | – |
