PARLINFO

Federal government Section
Duration of Canadian Ministries 1867 to Date

This material deals with the span of time during which each of Canada's Prime Ministers have held office. The "Guide to Canadian Ministries" has been used as the source material.

Calculations, which are done automatically, are based on a 365.25-day year and a 30.4375-day month, and may vary by 1 or 2 days.

"First Day" - the day on which a Ministry commenced is the day of oath of office as Prime Minister. However, there is no legal requirement that a Prime Minister take such an oath. Until 1957 the Prime Minister held at least one portfolio. If no oath of office as Prime Minister was taken the life of the Ministry began on the day he was sworn to that portfolio. If the Prime Minister retained the same portfolio from the previous ministry the first day was that on which the ministers were sworn to office.

"Last Day" - the day the Prime Minister dies or the Governor General accepts his resignation. A Prime Minister may indicate his intention to resign, but only offer his formal resignation when the newly elected Prime Minister is ready to form a government. The final day in office of a Ministry corresponds to the "Interpretation Act, 1967". When an appointment is made effective or terminates on a specified day, that appointment is considered to be effective or to terminate after the end of the previous day.

Government Parties Time in Office
Prime Minister's Time in Office

^ Duration of each Ministries
NamePrime MinisterMinistryDuration of Ministry
Harper, Stephen
Conservative Party of Canada
22nd 28th 2997 Days (8 years, 2 months, 15 days)
(2006.02.06 - )
Martin, Paul Edgar Philippe
Liberal Party of Canada
21st 27th 786 Days (2 years, 1 month, 26 days)
(2003.12.12 - 2006.02.05)
Chrétien, Joseph Jacques Jean
Liberal Party of Canada
20th 26th 3689 Days (10 years, 1 month, 6 days)
(1993.11.04 - 2003.12.11)
Campbell, A. Kim
Progressive Conservative Party
19th 25th 131 Days (4 months, 10 days)
(1993.06.25 - 1993.11.03)
Mulroney, Martin Brian
Progressive Conservative Party
18th 24th 3202 Days (8 years, 9 months, 7 days)
(1984.09.17 - 1993.06.24)
Turner, John Napier
Liberal Party of Canada
17th 23rd 78 Days (2 months, 18 days)
(1984.06.30 - 1984.09.16)
Trudeau, Pierre Elliott
Liberal Party of Canada
15th 22nd 1579 Days (4 years, 3 months, 27 days)
(1980.03.03 - 1984.06.29)
Clark, Charles Joseph
Progressive Conservative Party
16th 21st 272 Days (8 months, 29 days)
(1979.06.04 - 1980.03.02)
Trudeau, Pierre Elliott
Liberal Party of Canada
15th 20th 4061 Days (11 years, 1 month, 13 days)
(1968.04.20 - 1979.06.03)
Pearson, Lester Bowles
Liberal Party of Canada
14th 19th 1824 Days (4 years, 11 months, 29 days)
(1963.04.22 - 1968.04.19)
Diefenbaker, John George
Progressive Conservative Party
13th 18th 2130 Days (5 years, 9 months, 31 days)
(1957.06.21 - 1963.04.21)
St-Laurent, Louis Stephen
Liberal Party of Canada
12th 17th 3139 Days (8 years, 7 months, 4 days)
(1948.11.15 - 1957.06.20)
King, William Lyon Mackenzie
Liberal Party of Canada
10th 16th 4771 Days (13 years, 23 days)
(1935.10.23 - 1948.11.14)
Bennett, Richard Bedford
Conservative (1867-1942)
11th 15th 1902 Days (5 years, 2 months, 16 days)
(1930.08.07 - 1935.10.22)
King, William Lyon Mackenzie
Liberal Party of Canada
10th 14th 1411 Days (3 years, 10 months, 11 days)
(1926.09.25 - 1930.08.06)
Meighen, Arthur
Conservative (1867-1942)
9th 13th 87 Days (2 months, 27 days)
(1926.06.29 - 1926.09.24)
King, William Lyon Mackenzie
Liberal Party of Canada
10th 12th 1642 Days (4 years, 5 months, 29 days)
(1921.12.29 - 1926.06.28)
Meighen, Arthur
Conservative (1867-1942)
9th 11th 536 Days (1 year, 5 months, 19 days)
(1920.07.10 - 1921.12.28)
Borden, Robert Laird
Unionist (Conservative and Liberal)
8th 10th 1001 Days (2 years, 8 months, 27 days)
(1917.10.12 - 1920.07.09)
Borden, Robert Laird
Conservative (1867-1942)
8th 9th 2193 Days (6 years, 2 days)
(1911.10.10 - 1917.10.11)
Laurier, Wilfrid
Liberal Party of Canada
7th 8th 5564 Days (15 years, 2 months, 25 days)
(1896.07.11 - 1911.10.06)
Tupper, Charles
Conservative (1867-1942)
6th 7th 68 Days (2 months, 8 days)
(1896.05.01 - 1896.07.08)
Bowell, Mackenzie
Conservative (1867-1942)
5th 6th 493 Days (1 year, 4 months, 7 days)
(1894.12.21 - 1896.04.27)
Thompson, John Sparrow David
Liberal-Conservative
4th 5th 737 Days (2 years, 6 days)
(1892.12.05 - 1894.12.12)
Abbott, John Joseph Caldwell
Liberal-Conservative
3rd 4th 527 Days (1 year, 5 months, 10 days)
(1891.06.16 - 1892.11.24)
Macdonald, John Alexander
Liberal-Conservative
1st 3rd 4615 Days (12 years, 7 months, 19 days)
(1878.10.17 - 1891.06.06)
Mackenzie, Alexander
Liberal Party of Canada
2nd 2nd 1796 Days (4 years, 11 months, 1 days)
(1873.11.07 - 1878.10.08)
Macdonald, John Alexander
Liberal-Conservative
1st 1st 2319 Days (6 years, 4 months, 7 days)
(1867.07.01 - 1873.11.05)

^ Government Parties
PartyTime in Office
Liberal Party of Canada 30340 Days (83 years, 24 days)
Liberal-Conservative 8198 Days (22 years, 5 months, 10 days)
Progressive Conservative Party 5735 Days (15 years, 8 months, 13 days)
Conservative (1867-1942) 5279 Days (14 years, 5 months, 14 days)
Conservative Party of Canada 2997 Days (8 years, 2 months, 15 days)
Unionist (Conservative and Liberal) 1001 Days (2 years, 8 months, 27 days)

^ Prime Ministers
NamePartyTime in Office
King, William Lyon Mackenzie Liberal Party of Canada 7824 Days (21 years, 5 months, 2 days)
Macdonald, John Alexander Liberal-Conservative 6934 Days (18 years, 11 months, 26 days)
Trudeau, Pierre Elliott Liberal Party of Canada 5640 Days (15 years, 5 months, 9 days)
Laurier, Wilfrid Liberal Party of Canada 5564 Days (15 years, 2 months, 25 days)
Chrétien, Joseph Jacques Jean Liberal Party of Canada 3689 Days (10 years, 1 month, 6 days)
Mulroney, Martin Brian Progressive Conservative Party 3202 Days (8 years, 9 months, 7 days)
St-Laurent, Louis Stephen Liberal Party of Canada 3139 Days (8 years, 7 months, 4 days)
Harper, Stephen Conservative Party of Canada 2997 Days (8 years, 2 months, 15 days)
Borden, Robert Laird Conservative (1867-1942) 2193 Days (6 years, 2 days)
Diefenbaker, John George Progressive Conservative Party 2130 Days (5 years, 9 months, 31 days)
Bennett, Richard Bedford Conservative (1867-1942) 1902 Days (5 years, 2 months, 16 days)
Pearson, Lester Bowles Liberal Party of Canada 1824 Days (4 years, 11 months, 29 days)
Mackenzie, Alexander Liberal Party of Canada 1796 Days (4 years, 11 months, 1 days)
Borden, Robert Laird Unionist (Conservative and Liberal) 1001 Days (2 years, 8 months, 27 days)
Martin, Paul Edgar Philippe Liberal Party of Canada 786 Days (2 years, 1 month, 26 days)
Thompson, John Sparrow David Liberal-Conservative 737 Days (2 years, 6 days)
Meighen, Arthur Conservative (1867-1942) 623 Days (1 year, 8 months, 15 days)
Abbott, John Joseph Caldwell Liberal-Conservative 527 Days (1 year, 5 months, 10 days)
Bowell, Mackenzie Conservative (1867-1942) 493 Days (1 year, 4 months, 7 days)
Clark, Charles Joseph Progressive Conservative Party 272 Days (8 months, 29 days)
Campbell, A. Kim Progressive Conservative Party 131 Days (4 months, 10 days)
Turner, John Napier Liberal Party of Canada 78 Days (2 months, 18 days)
Tupper, Charles Conservative (1867-1942) 68 Days (2 months, 8 days)
^

Updated on: 2011.05.19

Revised on: 2011.05.19

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