| Session | Senate President | House Speaker |
| 2007 | Mike Cooney (D-Lewis & Clark) | Scott Sales (R-Gallatin) |
| 2005 | Jon Tester (D-Chouteau) | Gary Matthews (D-Custer) |
| 2003 | Bob Keenan (R-Flathead) | Doug Mood (R-Missoula) |
| 2001 | Tom Beck (R-Powell) | Dan McGee (R-Yellowstone) |
| 1999 | Bruce Crippen (R-Yellowstone) | John Mercer (R-Lake) |
| 1997 | Gary Aklestad (R-Toole) | John Mercer (R-Lake) |
| 1995 | Bob Brown (R-Flathead) | John Mercer (R-Lake) |
| 1993 | Fred Van Valkenburg (D-Missoula) | John Mercer (R-Lake) |
| 1991 | Joe Mazurek (D-Lewis & Clark) | Hal Harper (D-Lewis & Clark) |
| 1989 | Jack Galt (R-Meagher) | John Vincent (D-Gallatin) |
| 1987 | Bill Norman (D-Missoula) | Bob Marks (R-Jefferson) |
| 1985 | Bill Norman (D-Missoula) | John Vincent (D-Gallatin) |
| 1983 | Stan Stephens (R-Hill) | Dan Kemmis (D-Missoula) |
| 1981 | Jean Turnage (R-Lake) | Bob Marks (R-Jefferson) |
| 1979 | William Mathers (R-Custer) | Harold Gerke (D-Yellowstone) |
| 1977 | W. Gordon McOmber (D-Teton) | John Driscoll (D-Ravalli) |
| 1975 | W. Gordon McOmber (D-Teton) | Pat McKittrick (D-Cascade) |
| 1974 | W. Gordon McOmber (D-Teton) | Harold Gerke (D-Yellowstone) |
| 1973 | Bill Christiansen (D-Bighorn)* | Harold Gerke (D-Yellowstone) |
| 1971 | Tom Judge (D-Lewis & Clark) | James Lucas (R-Custer) |
| 1969 | Tom Judge (D-Lewis & Clark) | James Lucas (R-Custer) |
1967 | Ted James (R-Cascade) | James Felt (R-Yellowstone) | 1965 | Eugene Mahoney (D-Sanders)** | Ray Wayrynen (D-Silver Bow) | 1963 | David James (D-Liberty)** | Frank Hazelbaker (R-Beaverhead) | 1961 | Tim Babcock (R-Yellowstone) | Clyde Hawks (R-Bighorn) | 1959 | Paul Cannon (D-Silver Bow) | John J. MacDonald (D-Garfield) | 1957 | Paul Cannon (D-Silver Bow) | Eugene Mahoney (D-Sanders) | 1955 | George Gosman (R-Beaverhead) | Leo Graybill (D-Cascade) | 1953 | George Gosman (R-Beaverhead) | Dean Chaffin (R-Gallatin) | 1951 | Paul Cannon (D-Silver Bow) | Ory Armstrong (R-Flathead) | 1949 | Paul Cannon (D-Silver Bow) | Leo Graybill (D-Cascade) | 1947 | Ernest Eaton (R-Yellowstone) | Charles Scofield (R-Powder River) | 1945 | Ernest Eaton (R-Yellowstone) | George O'Connor (R-Carbon) | 1943 | Ernest Eaton (R-Yellowstone) | George O'Connor (R-Carbon) | 1941 | Ernest Eaton (R-Yellowstone) | E.J. Stromnes (D-Cascade) | 1939 | Hugh Adair (D-Lewis & Clark) | D.M. Manning (D-Treasure) | 1937 | Hugh Adair (D-Lewis & Clark) | H.D. Rolph (D-Liberty) | 1935 | W. Elmer Holt (D-Custer)*** | W. P. Pilgeram (D-Cascade) | 1933 | Frank Cooney (D-Missoula) | Dennis Dellwo (D-Lake) | 1931 | Frank A. Hazelbaker (R-Beaverhead) | W. R. Flachsenhar (R-Prairie) | 1929 | Frank A. Hazelbaker (R-Beaverhead) | Ralph Bricker (R-Judith Basin) | 1927 | W. S. McCormack (R-Flathead) | Glenn Davis (R-Wibaux) | 1925 | W. S. McCormack (R-Flathead) | Ralph Bricker (R-Judith Basin) | 1923 | Nelson Story, Jr. (R-Gallatin) | Calvin Crumbaker (R-Chouteau) | 1921 | Nelson Story, Jr. (R-Gallatin) | Fred Gibson (R-Park) | 1919 | W. W. McDowell (D-Silver Bow) | O. W. Belden (R-Fergus) | 1917 | W. W. McDowell (D-Silver Bow) | Jas. F. O'Connor (D-Park) | 1915 | W. W. McDowell (D-Silver Bow) | George Ramsey (D-Lewis & Clark) | 1913 | W. W. McDowell (D-Silver Bow) | Alexander MacDonald (D-Flathead) | 1911 | William R. Allen (R-Deer Lodge) | W. W. McDowell (D-Silver Bow) | 1909 | William R. Allen (R-Deer Lodge) | W. W. McDowell (D-Silver Bow) | 1907 | Edwin Norris (D-Beaverhead) | E. W. King (R-Gallatin) | 1905 | Edwin Norris (D-Beaverhead) | Wyllis Hedges (R-Fergus) | 1903 | Frank Higgins (D-Missoula) | Benjamin White (R-Beaverhead) | 1901 | Frank Higgins (D-Missoula) | F. E. Corbett (D-Silver Bow) | 1899 | Archibald Spriggs (Populist-Meagher) | Henry Stiff (D-Missoula) | 1897 | Archibald Spriggs (Populist-Meagher) | Jacob M. Kennedy (D-Deer Lodge) | 1895 | Alexander Botkin (R-Lewis & Clark) | Wilbra Swett (R-Silver Bow) | 1893 | Alexander Botkin (R-Lewis & Clark) | Thomas Matthews (Populist-Silver Bow) | 1891 | John Rickards (R-Silver Bow) | Harry Comly (D-Lewis & Clark) | 1889 | John Rickards (R-Silver Bow) | Charles Blakely (D-Gallatin)
Aaron Witter (R-Beaverhead)**** |
