Congress / Leader of Senate / Leader of H of Rep.
92nd Congress (1971-1973) Mike Mansfield (D-MT) Carl Albert (D-OK)
93rd Congress (1973-1975) Mike Mansfield (D-MT) Carl Albert (D-OK)
94th Congress (1975-1977) Mike Mansfield (D-MT) Carl Albert (D-OK)
95th Congress (1977-1979) Robert C. Byrd (D-WV) Tip O'Neill (D-MA)
96th Congress (1979-1981) Robert C. Byrd (D-WV) Tip O'Neill (D-MA)
97th Congress (1981-1983) Howard H. Baker, Jr. (R-TN) Tip O'Neill (D-MA)
98th Congress (1983-1985) Howard H. Baker, Jr. (R-TN) Tip O'Neill (D-MA)
99th Congress (1985-1987) Robert Dole (R-KS) Tip O'Neill (D-MA)
100th Congress (1987-1989) Robert C. Byrd (D-WV) Jim Wright (D-TX)
101st Congress (1989-1991) George J. Mitchell (D-ME) Tom Foley (D-WA)
102nd Congress (1991-1993) George J. Mitchell (D-ME) Tom Foley (D-WA)
103rd Congress (1993-1995) George J. Mitchell (D-ME) Tom Foley (D-WA)
104th Congress (1995-1997) Robert Dole (R-KS) Tom Foley (D-WA)
105th Congress (1997-1999) Trent Lott (R-MS) Newt Gingrich (R-GA)
106th Congress (1999-2001) Trent Lott (R-MS) Newt Gingrich (R-GA)
107th Congress (2001-2003) Thomas A. Daschle (D-SD) Dennis Hastert (R-IL) corrected per Tim's note below
108th Congress (2003-2005) William H. Frist (R-TN) Dennis Hastert (R-IL) corrected per Tim's note below
109th Congress (2005-2007) William H. Frist (R-TN) Dennis Hastert (R-IL) corrected per Tim's note below
110th Congress (2007-2009) Harry M. Reid (D-NV) Nancy Pelosi (D-CA)
111th Congress (2009-2011) Harry M. Reid (D-NV) Nancy Pelosi (D-CA)
112th Congress (2011-2013) Harry M. Reid (D-NV) John Boehner (R-OH)