1911: Sir Wilfred Laurier (Liberal-majority)
1914: William Fielding (leadership transition)
1916: William Fielding (Wartime Coalition)
1920: Sir William Fielding (Liberal - majority)
1926: David McDonald (Conservative-minority)
1931: David McDonald (Conservative-majority)
1936:David McDonald (Conservative-majority)
1938: Andrew Goodrich (Liberal-minority)
1940:John Bracken (Progressive Conservative majority)
1945: John Bracken (Progressive Conservative majority) (*)
1949: John Bracken (PC-majority)
1953: Ernest Manning (Liberal-majority)
1957: Ernest Manning (Liberal-majority)
1959: John Diefenbaker (Progressive Conservative -majority)
1963: John Diefenbaker (Progressive Conservative -majority)
1967: Pierre Trudeau (Liberal-majority)
1971: Tommy Douglas (NDP-majority)
1976: Pierre Trudeau (Liberal-majority)
1980: Robert Stanfield (Progressive Conservative -majority)
1982: Peter Lougheed (leadership transition)
1984: Jean Charest (Progressive Conservative -majority)
1988: Ed Broadbent (NDP-Liberal coalition)
1990: Michael 'Mike' Harris (Progressive Conservative-majority)
1995: Jean Charest (Progressive Conservative-minority)
1914: William Fielding (leadership transition)
1916: William Fielding (Wartime Coalition)
1920: Sir William Fielding (Liberal - majority)
1926: David McDonald (Conservative-minority)
1931: David McDonald (Conservative-majority)
1936:David McDonald (Conservative-majority)
1938: Andrew Goodrich (Liberal-minority)
1940:John Bracken (Progressive Conservative majority)
1945: John Bracken (Progressive Conservative majority) (*)
1949: John Bracken (PC-majority)
1953: Ernest Manning (Liberal-majority)
1957: Ernest Manning (Liberal-majority)
1959: John Diefenbaker (Progressive Conservative -majority)
1963: John Diefenbaker (Progressive Conservative -majority)
1967: Pierre Trudeau (Liberal-majority)
1971: Tommy Douglas (NDP-majority)
1976: Pierre Trudeau (Liberal-majority)
1980: Robert Stanfield (Progressive Conservative -majority)
1982: Peter Lougheed (leadership transition)
1984: Jean Charest (Progressive Conservative -majority)
1988: Ed Broadbent (NDP-Liberal coalition)
1990: Michael 'Mike' Harris (Progressive Conservative-majority)
1995: Jean Charest (Progressive Conservative-minority)