
Conservative Party of Canada/Liberal-Conservatives1. Sir John A. Macdonald (1867-1891)
2. Sir John Abbott (1891-1892)3. Sir John Sparrow David Thompson (1892-1894)4. Sir Mackenzie Bowell (1894-1896)5. Sir Charles Tupper (1896-1901)6. Sir Robert Laird Borden (1901-1902)7. Arthur Meighen (1920-1926, 1941-1942)8. Hugh Guthrie (1926-1927; interim)9. R. B. Bennett (1927-1938)10. Robert Manion (1938-1940)11. Richard Hanson (1940-1941; interim)Progressive Conservative Party12. John Bracken (1942-1948)13. George Drew (1948-1956)14. John Diefenbaker (1956-1967)
15. Robert Stanfield (1967-1976)16. Joe Clark (1976-1983)
17. Erik Nielsen (1983; interim)18. Brian Mulroney (1983-1993)19. Kim Campbell (1993)20. Jean Charest (1993-1998)21. Elsie Wayne (1998; interim)22. Joe Clark (1998-2003)
23. Peter MacKay (2003)Reform/CA24. Preston Manning (1987-2000)25. Deborah Grey (2000; interim)26. Stockwell Day (2000-2001)27. John Reynolds (2001-2002; interim)Conservative Party of Canada28. John Lynch-Staunton (2003-2004; interim)29. Stephen Harper (2002-2003; 2004-)go!
R1: Day 3, Wayne 2, Manning 1
R2: Wayne 19, Lynch-Staunton 8, Mulroney 4, Manning 2, Guthrie 1, Harper 1
R3: Harper 9, Reynolds 4, Charest 4, Guthrie 4, MacKay 2, Mulroney 4, Bennett 1
R4: Reynolds 2, Charest 1, Mulroney 1, Bennett 1
R5: Charest 2 (5 votes before), Bennett 2 (2 votes before), Mulroney 1, Guthrie 1
R6: Guthrie 2 (6 votes before), Bennett 2 (4 votes before), Mulroney 1
R7: Bennett 3, Nielsen 2, Mulroney 1
R8: Nielsen 3, Mulroney 2, Manning 1
R9: Manning 5, Hanson 1
R10: Grey 4, Manion 1, Macdonald 1, MacKay 1
R11: MacKay 3, Manion 2, Macdonald 1, Hanson 1
R12: Manion 4, Hanson 2, Macdonald 1
R13: Hanson 6, Macdonald 1
R14: Meighen 4, Macdonald 1, Bracken 1
R15: Thompson 3, Bracken 2, Macdonald 1
R16: Bracken 5, Macdonald 1
R17: Campbell 5
R18: Abbott 3, Borden 2, Macdonald 1
R19: Borden 3, Bowell 2
R20: Bowell 4, Drew 1
R21: Drew 3, Tupper 2
R22: Stanfield 3, Dief 2