Composition of the House

Canada is divided into 338 electoral districts, each of which sends one Member to the House of Commons.10 An electoral district can be defined as any place or territorial area in Canada entitled to return a person to serve in the House of Commons. Following each decennial census, the number of seats to be apportioned among the provinces is decided on the basis of population figures. The boundaries of each electoral district are then determined by provincial electoral boundaries commissions.

The composition of the House has expanded greatly since 1867. At the opening of the First Parliament, the House of Commons had 181 seats, distributed among the provinces as follows: 82 for Ontario, 65 for Quebec, 19 for Nova Scotia and 15 for New Brunswick.11

Soon after, new provinces began to seek admittance to Confederation. Representation in Parliament was considered negotiable and often did not reflect representation by population.12 When Manitoba joined Canada in 1870, four seats were added to the membership of the House.13 British Columbia and Prince Edward Island each got six seats upon joining Confederation in 1871 and in 1873, respectively.14 In 1886, the North-West Territories received four seats, and in 1902, Yukon Territory was granted one seat.15 When Saskatchewan and Alberta were established out of the North-West Territories in 1905, they were allotted 10 and seven seats respectively; the North-West Territories no longer had a seat in the House.16 In 1947, the electoral district of Yukon–Mackenzie River, comprising all of Yukon Territory plus the western portion of the Northwest Territories, known as the Mackenzie District, was created and allotted one seat.17 Newfoundland joined Confederation in 1949 and was granted seven seats.18 In 1952, the electoral district of Yukon–Mackenzie River was revoked; the Mackenzie District of the Northwest Territories was granted one seat and the original Yukon electoral district was restored.19 In 1962, the Representation Act was amended to give the entire Northwest Territories one seat.20 In 1975, the number of seats in the Northwest Territories grew to two.21 On April 1, 1999, the territory of Nunavut was established out of the eastern portion of the Northwest Territories and was given one of its two seats.22

Today, there are 338 Members from 10 provinces and 3 territories: 42 for British Columbia, 34 for Alberta, 14 for Saskatchewan, 14 for Manitoba, 121 for Ontario, 78 for Quebec, 10 for New Brunswick, 11 for Nova Scotia, 4 for Prince Edward Island, 7 for Newfoundland and Labrador,23 and 1 each for Yukon, the Northwest Territories and Nunavut (see Figure 4.1, “Representation Since 1867”).

Representation

In 1867, the Fathers of Confederation adopted the principle of representation by population. On the basis of this principle, a formula was derived to calculate the number of seats each province would be allocated in the House of Commons. Ontario, New Brunswick and Nova Scotia were each allotted a number of seats on the basis of their share of the total population in relation to that of the province of Quebec, which had been guaranteed 65 seats, the same number it had in the Province of Canada legislature.24 As provinces and territories joined Canada and the country’s population distribution evolved, Parliament amended the formula for calculating the number of seats on numerous occasions.

Figure 4.1 Representation Since 1867
Year
Canada
Ontario
Quebec
Nova Scotia
New Brunswick
Manitoba
British Columbia
Prince Edward Island
Saskatchewan
Alberta
Newfoundland and Labrador
Northwest Territories
Yukon
Nunavut

1867

181

82

65

19

15

1870

185

82

65

19

15

4

1871

191

82

65

19

15

4

6

1872

200

88

65

21

16

4

6

1873

206

88

65

21

16

4

6

6

1882

211

92

65

21

16

5

6

6

1886

215

92

65

21

16

5

6

6

4

1892

213

92

65

20

14

7

6

5

4

1902

214

92

65

20

14

7

6

5

4

1

1903

214

86

65

18

13

10

7

4

10

1

1905

221

86

65

18

13

10

7

4

10

7

1

1914

234

82

65

16

11

15

13

3

16

12

1

1915

235

82

65

16

11

15

13

4

16

12

1

1924

245

82

65

14

11

17

14

4

21

16

1

1933

245

82

65

12

10

17

16

4

21

17

1

1947

255

83

73

13

10

16

18

4

20

17

1

1949

262

83

73

13

10

16

18

4

20

17

7

1

1952

265

85

75

12

10

14

22

4

17

17

7

1

1

1966

264

88

74

11

10

13

23

4

13

19

7

1

1

1975

265

88

74

11

10

13

23

4

13

19

7

2

1

1976

282

95

75

11

10

14

28

4

14

21

7

2

1

1987

295

99

75

11

10

14

32

4

14

26

7

2

1

1997

301

103

75

11

10

14

34

4

14

26

7

2

1

1999

301

103

75

11

10

14

34

4

14

26

7

1

1

1

2004

308

106

75

11

10

14

36

4

14

28

7

1

1

1

2015

338

121

78

11

10

14

42

4

14

34

7

1

1

1

Historical Perspective

At Confederation, the Constitution Act, 1867, stipulated that in order for the population of each province to be accurately represented in the House of Commons, the number of seats for each province was to be recalculated after each decennial census, starting with the census of 1871.25 The total number of seats was initially calculated by dividing the population of each province by a fixed number referred to as the “electoral quota” or “quotient”. This quotient was determined by dividing the population of the province of Quebec by 65. There was one exception to this formula, known as the “one-twentieth rule”: no province could lose seats in an electoral redistribution unless its share of the national population had decreased by at least five per cent (one-twentieth) between the last two censuses.

Because the country’s population was growing, the one-twentieth rule caused no problems for the first 25 years of Confederation. In 1872, representation in the House increased following the 1871 Census: Ontario received six additional seats, Nova Scotia two and New Brunswick one. Taking into account the new seats allocated to Manitoba and British Columbia, this brought the total number of Members to 200. Following the 1881 Census, representation in the House increased again: Ontario received four extra seats and Manitoba one, which, together with the new seats assigned to Prince Edward Island, brought the total to 211 Members. However, in 1892, provinces lost seats for the first time. The three Maritime provinces lost four seats in total, causing some concern, particularly in Prince Edward Island. Although the population was growing in the maritime provinces, it was becoming relatively smaller in proportion to the national total. In 1903, the readjustment of representation saw the number of seats for Prince Edward Island further reduced. In arguments before the Supreme Court, Prince Edward Island claimed that it should be entitled to the six seats it was allocated when it joined Confederation. The Supreme Court subsequently upheld that representation must be based on the total population of Canada and that no exception could be made for Prince Edward Island.26

Despite the Supreme Court ruling, there was dissension among some of the provinces whose population was declining. In 1914, the first amendment to the original representation formula was proposed. The amendment consisted in adding a new section to the Constitution Act, 1867, to protect the smallest provinces from losing additional seats because of the relative decline in their population. Adopted in 1915 and still in effect today, the “senatorial clause”, as it is referred to, guarantees that no province can have fewer seats in the House of Commons than it does in the Senate.27

Following the census of 1941, a constitutional amendment was adopted to postpone the redistribution process until the first session of Parliament after the end of the war because the Western provinces were concerned that the displacement of population caused by the war would affect their representation in the House.28 Many of the provinces were also dissatisfied with the redistribution rules, which would have seen four of the nine provinces being allocated representation in accordance with their population while the other five provinces would have been guaranteed extra seats either because of the senatorial clause or the one-twentieth rule.29 The demand for representation by population, in particular by Quebec, led to an amendment to the Constitution Act, 1867, that introduced a new seat distribution formula and repealed the one-twentieth rule in 1946.30 The new formula fixed the total number of seats at 255, one for Yukon and the other 254 divided among the provinces on the basis of their share of the country’s total population rather than the average population per electoral district in Quebec.31

However, following the 1951 census, it was soon discovered that, with provincial populations not increasing at the same rate, the 1946 formula would reduce representation in Nova Scotia, Manitoba and Saskatchewan, where population growth was slower. Thus, in 1952, the Constitution Act, 1867, was amended again to prevent a rapid decline in the number of seats of these provinces. The amendment stipulated that no province could lose more than 15% of the number of seats it was entitled to under the last readjustment. It also provided that no province could have fewer seats than a province with a smaller population.32 Despite this amendment, after the 1961 census, these same three provinces and Quebec lost seats, as did Newfoundland following the 1971 census.

In 1974, concerned about the steady loss of seats in some provinces, Parliament enacted the Representation Act, 1974. This legislation provided a new formula, known as the “amalgam formula”,33 for calculating representation in the House to ensure that no province lost any seats.34 As in the original representation formula, Quebec was allocated a set number of seats, 75 rather than the 65 it had at the time, and its average constituency population was used to calculate the number of seats in the other provinces. In each subsequent readjustment, Quebec would automatically receive four seats to compensate for population growth and to decrease its average constituency population, the basis for calculating the allocation of seats among the other provinces. In addition, three categories of provinces were created: large provinces (population of 2.5 million or more), intermediate provinces (population between 1.5 and 2.5 million), and small provinces (population under 1.5 million). Only the large provinces were allocated seats in strict proportion to Quebec; separate rules for calculating the number of seats were established for the small and intermediate provinces.35 The amalgam formula was applied only once, in 1976, establishing 282 seats in the House.

Following the 1981 Census, calculations revealed that the amalgam formula would substantially increase representation in the House both immediately and after subsequent censuses. The Standing Committee on Privileges and Elections was therefore mandated to study the issue of representation in both the Thirty-Second (1980–84) and Thirty-Third (1984–88) Parliaments,36 and the Representation Act, 1985, was passed in 1986. In amending section 51 of the Constitution Act, 1867, the Representation Act, 1985, set down a formula for calculating representation, starting with 282 seats as established by the 1976 amalgam formula, and abided by the following rules:37

  • Two seats were allocated to the Northwest Territories, and one was assigned to Yukon.38
  • The total population of the 10 provinces was divided by 279 to obtain the electoral quotient.
  • The number of seats to be allocated to each province was calculated by dividing the total population of the province by the electoral quotient.
  • If the result left a remainder higher than 0.50, the number of seats was rounded off to the next whole number.

Once the number of seats per province was obtained, adjustments were made by applying the senatorial clause and the new “grandfather clause”,39 which ensured that no province could have fewer seats than it had in 1986, when the Representation Act, 1985, came into force.40

As a result of this formula, the House grew to 295 seats for the 1988 election, 301 seats for the 1997 election and 308 seats for the 2004 election.

Following the 2011 decennial census, a new formula was developed, which increased the number of seats in the House to 338 for the 42nd general election, held in 2015.

Current Formula

In December 2011, Parliament enacted a law to amend the Constitution Act, 1867, the Electoral Boundaries Readjustment Act and the Canada Elections Act.41 Known by its short title, the Fair Representation Act, the Act introduced a new formula for adjusting the number of seats in the House of Commons.42 The Act reduced the electoral quotient and required it to be revised prior to each subsequent redistribution. The goal of the formula was to ensure that Canadians living in provinces such as Ontario, British Columbia and Alberta would be fairly represented, as those provinces had become under-represented. In addition, the Act maintained the number of seats in the smallest provinces and proportional representation for Quebec to prevent them from also being under-represented.

Under the new formula:

  1. The initial number of seats allocated to each province is calculated by dividing its population by the electoral quotient, which was fixed at 111,166. The Act provides that the electoral quotient be revised before the redistribution that follows each census.
  2. Once the initial number of seats allocated to each province has been established, adjustments are made by applying the special clauses: the senatorial clause and the grandfather clause.
  3. Next, the rule referred to as the “representation rule” is applied. This rule applies only to a province whose population was overrepresented in the House of Commons after the previous redistribution process. If a province becomes under-represented after the above calculations are made, it is assigned additional seats so that its proportion of the seats in the House of Commons is equivalent to its proportion of the population of Canada.
  4. Once the special clauses and the representation rule have been applied, the number of seats for each province is final, and then three seats are added, one for each of the three territories, pursuant to subsection 51(2) of the Constitution Act, 1867, thereby establishing the total number of seats in the House of Commons.