Canadian Senate divisions refers to two aspects of the Senate of Canada. First, it refers to the division of Canada into four regional Senate divisions of 24 senators each, as set out in section 22 of the Constitution Act, 1867.[1] The four regions are the Western Provinces, Ontario, Quebec and the Maritimes. These regions are intended to serve the Senate's purpose of providing regional representation in the Parliament of Canada, in contrast to the popular representation that the House of Commons is intended to provide.[2] While not within any of the original four Senate divisions, Senate seats are also allocated to Newfoundland and Labrador and the three territories.[3][2] The four divisions can be expanded when the need arises to have an extra two senators appointed to each regional division.

Second, it refers to divisions within a province represented by senators from the Canadian Senate, also known as "senatorial designation". Under the Constitution, only Quebec has official Senate divisions for each of the senatorial designations within the province.[3] In all other provinces, senators are appointed to represent the province as a whole and the Constitution makes no reference to official senatorial designations for those provinces. Senators from provinces outside Quebec may simply "designate" a district they wish to symbolically represent within their province, which can be named at the time of their appointment or at a later time.[4] These senate divisions have no specific geographic boundaries though their names often give a reference to a general geographic area. However a senator will sometimes create boundaries for their senate division even though it has no legal status. While relatively rare, a senator outside of Quebec can change his or her division in the same manner as party affiliation, simply by notifying the Clerk of the Senate.

Senate seats

Map of the regional Senate divisions

Unlike the House of Commons, seats in the Canadian Senate are not based upon any population measure or adjusted by population (an exception to this was set out under the Manitoba Act, in which Manitoba's allotment increased until the province reached a target population). Rather, they are fixed under the Constitution Act 1867 (in the case of Quebec), or are established upon the appointment of a senator and cease to exist when the senator leaves office (outside of Quebec).[3][2]

The Constitution also provides that a province cannot have fewer seats in the House of Commons than it has in the Senate. There are currently 105 seats in the Canadian Senate. Seats are divided among provinces and territories and can only change with a constitutional amendment, or a constitutional provision that allows seats to change based on certain conditions.[3] Beyond the constitutional allotment of Senate seats per province, the seats are grouped into four regions of 24 seats. Provisions under section 26 of the Constitution Act exist to add up to two extra seats per region, with no more than 113 members allowed to sit in the Senate.

Seats in the Canadian Senate chamber.

Senators have the same constitutional provisions to offer services as members of the House of Commons. This includes a rarely used provision to maintain a constituency office. Three senators currently have such offices. Two of the three have not designated themselves to a specific division, but to represent their province as a whole. While constituency offices are rare, all senators maintain an office on Parliament Hill.

See also: Party standings and composition by seat in the Senate

Evolution of Senate seats

Evolution of Senate seats
Province (Joined Canada) 1867 1870 1871 1873 1874 1879 1882 1889 1903 1905 1915 1949 1975 1999
Ontario regional division (1867)
Ontario (1867) 24 24 24 24 24 24 24 24 24 24 24 24 24 24
Quebec regional division (1867)
Quebec (1867) 24 24 24 24 24 24 24 24 24 24 24 24 24 24
The Maritimes regional division (1867)
New Brunswick (1867) 12 12 12 11 10 10 10 10 10 10 10 10 10 10
Nova Scotia (1867) 12 12 12 11 10 10 10 10 10 10 10 10 10 10
Prince Edward Island (1873) 0 0 0 4 4 4 4 4 4 4 4 4 4 4
The Western Provinces regional division (1915)
Alberta (1905) 0 0 0 0 0 0 0 0 0 4 6 6 6 6
British Columbia (1871) 0 0 3 3 3 3 3 3 3 6 6 6 6 6
Manitoba (1870) 0 2 2 2 2 2 3 4 4 4 6 6 6 6
Saskatchewan (1905) 0 0 0 0 0 0 0 0 0 4 6 6 6 6
The territories (1879)
Northwest Territories (1870) 0 0 0 0 0 2 2 2 4 0 0 0 1 1
Nunavut (1999) 0 0 0 0 0 0 0 0 0 0 0 0 0 1
Yukon (1898) 0 0 0 0 0 0 0 0 0 0 0 0 1 1
Newfoundland and Labrador (1949)
Newfoundland and Labrador (1949) 0 0 0 0 0 0 0 0 0 0 0 6 6 6
Total 72 74 77 79 77 79 80 81 83 90 96 102 104 105


Quebec regional division

Map of the Quebec regional divisions

The Quebec regional division was created in 1867, at the time of Confederation. Quebec has had 24 seats since 1867. The region covers the entire province. Quebec is unique in each of its 24 senatorial designations are set out in the Constitution Act of 1867 and defined in the Consolidated Statutes of Canada 1859. These divisions are the same as those that Canada East held in the Legislative Council of Canada prior to Canadian confederation. The stated purpose of retaining the Senate divisions within Quebec is to protect the interests of religious and linguistic minorities inside the province.[2] Quebec senators must own property in their represented divisions.

An exception to the requirement for Quebec senators to represent a specific division occurs when the Prime Minister directly advises the Sovereign to temporarily expand the Senate under the Regional Expansion Clause in Section 26 of the British North America Act. This clause can be used to increase the Senate seats by 1 or 2 senators for each region, including Quebec. Prime Minister Brian Mulroney is to date the only one to successfully exercise this clause, on September 27, 1990. Under the clause, Senators Normand Grimard and Thérèse Lavoie-Roux represented self-designated divisions within Quebec following their appointments to the Senate. Senators appointed under Section 26 may name a senatorial designation of their own choosing in the same manner as a Senator from the other nine provinces and any such self-designation carries similar status.

Quebec's Senate divisions have not changed since Confederation and remain based on the province's 1867 boundaries. Although the territory of the Province of Quebec has expanded northward twice (in 1898 and 1912) the division boundaries were never changed to accommodate the boundary changes, thus leaving Northern Quebec unrepresented in the Senate. At the time, this was a relatively uncontroversial anomaly because the additional territory was primarily populated by First Nations peoples, who did not gain the right to vote until the 1960s.


*Narcisse-Fortunat Belleau declined appointment to the Senate and Stadacona Senate division. Ten senators have served out terms in Stadacona.

See List of Quebec senators

Ontario regional division

Map of the Ontario regional division

The Ontario regional division was created at the time of Confederation in 1867. The region covers the entire province and has not had any changes in seat numbers since 1867.

Ontario has been the most populous province and region in Canada since the birth of the country in 1867. The province has expanded its boundaries twice, to cover land once part of the Northwest Territories. Ontario also holds more seats in the House of Commons of Canada than any other province.

The capital of Canada, Ottawa is located within Ontario.


  1. Senator Jean-Robert Gauthier changed from Ontario to Ottawa-Vanier
  2. Senator Lorna Milne changed from Brampton to Peel County
  3. Senator Anne Cools changed from Toronto Centre to Toronto Centre-York

See List of Ontario senators

Western Provinces regional division

Western Provinces regional division

The Western provinces regional division was created under the Constitution Act, 1915 to bring the total to four regional divisions. Six senators would represent each of the four western provinces Alberta, British Columbia, Manitoba and Saskatchewan for a total of 24 senators.

Prior to 1915 the provinces were not organized into a region, and had their own path of evolution. Manitoba gained seats on a set population expansion clause. Alberta and Saskatchewan gained seats from the Northwest Territories. British Columbia was given seats outlined in the Terms of Union.

Alberta has held popular elections for senators, although the Prime Minister is not obliged to nominate the winner of any such election to the Senate. Nonetheless, three winners of such elections have been nominated to the Senate: Senator Stan Waters was elected in the 1989 Alberta Senate nominee election, and Senators Bert Brown and Betty Unger were elected senators-in-waiting in 2004.

1 Senator Nicholas Taylor changed from Bon Accord to Sturgeon.

The Maritimes regional division

The Maritimes regional division was created in 1867. At the time of Confederation the division contained only Nova Scotia and New Brunswick. It was expected that Prince Edward Island would also join; however, it held out until 1873 as it sought equal representation by province rather than by region. At the Quebec Conference of 1864 the Prince Edward Island representatives believed the only safeguard for a small province would be an equal representation in the Senate. Prince Edward Island held out joining Canada until 1873 and ended up accepting the four senate seats.

On June 5, 2006, New Brunswick Premier Bernard Lord announced his province's support for possible Senate elections to be held during the New Brunswick municipal election cycle, joining Alberta as the only province actively pursuing elected senators. Among his proposal was a plan to divide New Brunswick into five regions or divisions and have each represented by two senators. Another possibility of the proposal was to have senators remain at large for the province.

The Maritimes Regional division

Newfoundland and Labrador

During the Quebec Conference of 1864 it was determined that Newfoundland and Labrador was a distinct region and that the territory should exist as an exception outside of the equal regional divisions, if it should enter Canada. When Newfoundland and Labrador entered Confederation in 1949 the Newfoundland Act confirmed the original terms of union and was given six seats in the Senate.

Map of Newfoundland and Labrador

See List of Newfoundland and Labrador senators

The territories

The Northwest Territories, Yukon and Nunavut are currently represented by one senator each. The Northwest Territories was admitted to Canada in 1870, but did not gain representation in the Senate until 1888. The territory was granted two more seats in 1903. After Alberta and Saskatchewan were created in 1905 the Northwest Territories lost representation in the Senate until 1975 when it regained one seat under the Constitution Act 1975 (No 2).

The Yukon was created out of the Northwest Territories in 1898 but did not get representation in the Senate until it was granted one seat under the Constitution Act 1975 (No 2).

Nunavut was granted one seat under the Constitution Act, 1999 (Nunavut) when the territory was created out of the Northwest Territories in 1999.

Map of the Territories


See List of Canadian territorial senators

Constitution Act, 1886


  1. ^ The Constitution Act, 1867, 30 & 31 Vict., c. 3, s. 22 (U.K.).
  2. ^ a b c d Parliamentary and Information Research Service (2009-08-10). "Publication No. 2009-02-E - Reforming the Senate of Canada: Frequently Asked Questions" (PDF). Library of Parliament. Retrieved 2011-07-05.[permanent dead link]
  3. ^ a b c d See list of Canadian constitutional documents for details.
  4. ^ Hynes, Aaron (2010). "Toward a Rational Redistribution of Seats in Canada's Senate" (PDF). Canadian Parliamentary Review. Parliament of Canada (Winter 2010): 27–31. Retrieved 2011-09-07.