This is a list of joint premiers of the Province of Canada in order of time served in office as joint premier, both as premier and as deputy. This list counts time during an election campaign as belonging to the preceding premier. When adding together days in non-consecutive terms, a month is taken to mean 30 days. Sir John A. Macdonald: 9 years, 0 months, 27 days William Draper: 5 years, 0 months, 25 days Robert Baldwin: 4 years, 9 months, 18 days Sir Louis-Hippolyte Lafontaine: 4 years, 9 months, 18 days Sir George-Étienne Cartier: 4 years, 5 months, 25 days Sir Étienne-Paschal Taché: 3 years, 11 months, 30 days Augustin-Norbert Morin: 3 years, 2 months, 30 days Sir Francis Hincks: 2 years, 11 months, 14 days Denis-Benjamin Viger: 2 years, 6 months, 5 days John Sandfield Macdonald: 2 years, 0 months, 6 days Sir Narcisse-Fortunat Belleau: 1 year, 11 months Denis-Benjamin Papineau: 1 year, 8 months, 23 days Sir Allan Napier MacNab: 1 year, 8 months, 13 days Antoine-Aimé Dorion: 1 year, 0 months, 19 days Louis-Victor Sicotte: 11 months, 21 days Samuel Harrison: 11 months, 7 days Henry Sherwood: 9 months, 12 days Charles Richard Ogden: 8 months, 2 days George Brown: 4 days Canada, Joint Premiers