Proposed redistribution of Western Australia into electoral divisions

Updated: 19 August 2015

Chapter 1 - Background and context

This chapter outlines the legislative requirements of the redistribution, ranging from the formal commencement of the process to the release of the Committee’s proposed redistribution. The chapter explains how these requirements have been met during the redistribution process, and also discusses trends in population and enrolment for Western Australia.

  1. A redistribution is a redrawing of electoral boundaries to ensure, as near as practicable:
    • each state and territory gains representation in the House of Representatives in proportion to its population, and
    • there is a similar number of electors in each electoral division for a given state or territory.

Compliance with legislative requirements

  1. The Electoral Act specifies that a redistribution is required when:
    • the number of members of the House of Representatives to which a state or territory is entitled has changed (relative population change),
    • the number of electors in more than one third of the electoral divisions in a state (or one of the electoral divisions in the Australian Capital Territory or the Northern Territory) deviates from the average divisional enrolment by more than 10 per cent for a period of more than two months, or
    • a period of seven years has elapsed since the last redistribution.
  2. The processes to be followed in conducting a redistribution are also specified in the Electoral Act. Appendix A summarises the legislative requirements which have been complied with in conducting this redistribution. Each of the requirements is discussed in further detail in this Chapter.

Determination of the number of members of the House of Representatives to be chosen in states and territories

  1. On 13 November 2014, the then acting Electoral Commissioner made a determination under section 48(1) of the Electoral Act of the number of members of the House of Representatives to which each state and territory is entitled at the next general election. As a result of this determination, Western Australia’s entitlement has increased from 15 to 16 members of the House of Representatives.

Direction for a redistribution of Western Australian electoral divisions

  1. In accordance with sub-section 59(1) of the Electoral Act, the Electoral Commission published a notice in the Gazette on 1 December 2014, directing that a federal redistribution commence for Western Australia.

Determination altering the projection time for equality of enrolments

  1. Section 63A of the Electoral Act establishes that the projection time in relation to a redistribution is the end of the period of three years and six months after the ‘starting time’. The starting time from which the projection time is calculated, as defined by sub-section 63A(5), is the date on which the augmented Electoral Commission determines the boundaries and names of divisions via publication of a notice in the Gazette.
  2. The starting time for the redistribution of Western Australia is 19 January 2016 as this is the date on which the augmented Electoral Commission will cause the boundaries and names of electoral divisions in Western Australia to be published in the Gazette.
  3. Sub-section 63A(3) further provides that if the Electoral Commission is of the opinion that a further redistribution will be required as a result of a change to a state or territory’s entitlement to representation in the House of Representatives, sooner than seven years after the starting time, it may determine that the projection time will be a time that is half way between the starting time for the projection and the time when, in the opinion of the Electoral Commission, the further redistribution will or may be required.
  4. The Electoral Commission determined that the projection time for Western Australia would be altered and published a notice in the Gazette on 1 December 2014 determining that the projection time is 8 February 2017.

Current enrolment quota

  1. Section 65 of the Electoral Act requires the Electoral Commissioner, as soon as practicable after the redistribution commences, to determine the current enrolment quota using the following formula:

Number of electors enrolled in Western Australia as at the end of the day on which the redistribution commenced (1 December 2014)


Number of members of the House of Representatives to which Western Australia is entitled

  1. In calculating this quota, sub-section 65(2) of the Electoral Act provides that:
    • where the result contains a fraction that is less than 0.5, the number is rounded down to the nearest whole number, or
    • where the result contains a fraction that is equal to or greater than 0.5, the number is rounded up to the nearest whole number.
  2. Table A shows the numbers used to calculate the current enrolment quota and the resultant range of the permissible maximum and minimum number of electors in a division (discussed further in ‘Statutory requirements for the making of a proposed redistribution’).
Table A: Current enrolment quota and permissible range for Western Australia
Number of electors enrolled in Western Australia as at the end of the day on which the redistribution commenced (1 December 2014) 1 504 413
Number of Members of the House of Representatives to which Western Australia is entitled at the next general election 16
Current enrolment quota for Western Australia 94 026
Permissible maximum number of electors in a division (current enrolment quota plus 10%) 103 428
Permissible minimum number of electors in a division (current enrolment quota minus 10%) 84 623
  1. The then acting Electoral Commissioner signed a written instrument on 8 December 2014, as required by sub-section 65(1) of the Electoral Act, determining the quota of electors for the purposes of the redistribution to be 94 026.
  2. As discussed in Appendix B, when making a proposed redistribution, the Committee is required to ensure that the number of electors in a proposed division does not vary by more than 10 per cent above or more than 10 per cent below the current enrolment quota.

Enrolment projections and projected average enrolment

  1. As discussed in Appendix B, when making a proposed redistribution, the Committee is required by sub-section 66(3)(a) of the Electoral Act to ensure, as far as practicable, that the number of electors enrolled in the proposed division at the projection time will not vary by more than 3.5 per cent above or more than 3.5 per cent below the projected average enrolment. The projected average enrolment is calculated using the following formula:

Projected total number of electors enrolled in Western Australia at the projection time (8 February 2017)


Number of members of the House of Representatives to which Western Australia is entitled

  1. Table B shows the figures used to calculate the projected average enrolment and the resultant range of the permissible maximum and minimum number of electors in a division at the projection time (discussed further in ‘Statutory requirements for the making of a proposed redistribution’).
Table B: Projected average enrolment and permissible range for Western Australia
Projected total number of electors enrolled in Western Australia at the projection time (8 February 2017) 1 594 973
Number of Members of the House of Representatives to which Western Australia is entitled at the next general election 16
Projected average enrolment for Western Australia 99 686
Permissible maximum number of electors in a division at the projection time (projected average enrolment plus 3.5%) 103 175
Permissible minimum number of electors in a division at the projection time (projected average enrolment minus 3.5%) 96 197

Appointment of the Redistribution Committee for Western Australia

  1. Sub-section 60(1) of the Electoral Act specifies that a Redistribution Committee for Western Australia is required to be appointed by the Electoral Commission, via a written instrument, as soon as practicable after the commencement of the redistribution. Section 60 specifies the membership of the Committee.
  2. The membership of the Redistribution Committee for Western Australia is provided at Table C.
Table C: Membership of the Redistribution Committee for Western Australia
Position on
Redistribution Committee
Name Basis of membership
Chair Mr Tom Rogers Electoral Commissioner
Member Ms Marie Neilson acting Australian Electoral Officer for Western Australia
Member Mr Colin Murphy Auditor-General for Western Australia
Member Mr Mike Bradford Surveyor-General of Western Australia
  1. The Committee met on:
    • 22 May 2015
    • 5 June 2015
    • 19 June 2015
    • 29 June 2015.

Invitation for interested parties to submit suggestions and comments on suggestions

  1. The Electoral Commissioner is required by sub-sections 64(1) and 64(2) of the Electoral Act to invite written suggestions relating to the redistribution and written comments on the suggestions received, by:
    • publishing a notice in the Gazette on a Wednesday, and
    • publishing a notice in two newspapers circulating throughout Western Australia.
  2. The notice in the Gazette was published on Wednesday 11 March 2015 and notices were published in The Weekend West and The Weekend Australian newspapers on 14 March 2015.1
  3. The notices included information about the processes involved in conducting a redistribution, how to participate in the process and where to find further information. Table D indicates the avenues submitters could utilise to make a suggestion or comment on suggestions, and the extent to which they were used.
Table D: Avenues utilised to make a suggestion or comment on suggestion
Avenue Suggestion Comment on suggestion
Number Percentage Number Percentage
Form upload on AEC website 17 63% 8 50%
Email 9 33% 7 44%
Mail 0 0% 0 0%
Fax 0 0% 0 0%
In person 1 4% 1 6%
Total 27 100% 16 100%
  1. Interested parties were able to submit written suggestions from Wednesday 11 March 2015 until 6pm (AWST) on Friday 10 April 2015, the 5th Friday after publication of the Gazette notice. During this time, 27 suggestions were received by the Committee (see Appendix C).
  2. As required by section 64(3)(a) of the Electoral Act, copies of the suggestions were made available to members of the public for perusal at the office of the Australian Electoral Officer for Western Australia in Perth from Monday 13 April 2015. The suggestions were also made available on the AEC website.
  3. Interested parties were able to submit written comments on suggestions from Monday 13 April 2015 until 6pm (AWST) on Friday 24 April 2015, the 7th Friday after publication of the Gazette notice. During this time, 16 comments on suggestions were received by the Committee (see Appendix D).
  4. From 28 April 2015, interested parties were able to peruse the comments on suggestions on the AEC website.

Redistribution Committee’s consideration of suggestions and comments on suggestions

  1. The Committee is required by sub-section 64(4) of the Electoral Act to consider all suggestions and comments on suggestions that were received by the specified lodgement times.
  2. At its meeting on 22 May 2015, the Committee considered each of the 27 suggestions and 16 comments in detail. While no suggestion or comment was adopted in its entirety, the Committee noted common elements that emerged from the suggestions and comments and a number of the points raised are reflected in the proposed redistribution.
  3. Suggestions and comments are available in full on the AEC website and reproduced on the DVD included with the hard copy version of this report.
  4. The Committee noted that a range of methods could be applied to achieve a redistribution outcome for Western Australia. Submissions addressing the state as a whole adopted varying approaches and proposed moving between, approximately, 14 per cent and 26 per cent of electors into a different division. The Committee noted that in the absence of any other changes some six per cent of electors must move in order to create the new division.
  5. Submissions dealing with specific regions generally sought to improve electoral boundaries and to strengthen local community of interests by bringing together neighbouring localities into a single division and/or by suggesting LGA boundaries as divisional boundaries. In its deliberations the Committee noted that those submissions that proposed boundaries for specific regions of the state would need to be considered in the broader context of their effect on the state as a whole.
  6. A number of submissions proposed the creation of a new division in the growth areas of Perth’s south-eastern suburbs, to be constructed primarily of localities from the Armadale and Gosnells LGAs. Other submissions suggested the four divisions that currently fall within numerical tolerances remain in their current composition, recommending no changes to those boundaries. However, the majority of state-wide suggestions significantly altered at least two of the existing 15 divisions in order to accommodate the new division.
  7. Appendix E summarises the key themes contained in all suggestions and comments on suggestions, and how they relate to the Committee’s proposal with regard to the requirements of the Electoral Act.

Statutory requirements for the making of a proposed redistribution

  1. Section 66 of the Electoral Act requires the Committee to take account of specific criteria in forming the proposed boundaries.
  2. The Committee has ensured that the number of electors in each proposed electoral division is:
    • not less than 90 per cent or more than 110 per cent of the current enrolment quota (see Table A above for the permissible maximum and minimum number of electors at this time), and
    • not less than 96.5 per cent or more than 103.5 per cent of the average projected divisional enrolment at the projection time of 8 February 2017 (see Table B above for the permissible maximum and minimum number of electors at this time).
  3. The Committee has also given due consideration to:
    • community of interests within the proposed electoral divisions including economic, social and regional interests,
    • means of communication and travel within the proposed electoral divisions,
    • the physical features and area of the proposed electoral divisions, and
    • the boundaries of existing electoral divisions.
  4. Further details regarding these requirements are contained in Appendix B.

Population and enrolment in Western Australia

  1. The periodic redrawing of electoral boundaries is required to:
    • address changes in the population of a state or territory. These changes may result from natural increase, natural decrease, net overseas migration or net interstate migration, and
    • address changes in the distribution of electors within the state or territory.

Western Australia’s population

  1. On 13 November 2014, the then acting Electoral Commissioner ascertained that Western Australia’s population was 2 565 588.2 This represents growth of 10.73 per cent since the previous ascertainment of the population was made on 29 September 2011.
  2. Geographically, Western Australia is the largest Australian state, with a population that continues to grow faster than the Australian average.
  3. At June 2014, Western Australia’s estimated resident population (ERP) represented 11 per cent of the total Australian population.3 The state’s ERP at June 2014 was 2.57 million,4 an increase of 2.16 per cent since June 2013. As shown in Figure A below, from 2008–09 to 2013–14, Western Australia’s population growth rate has been higher than any other state or territory.
Figure A: Population increase by state and territory 2008–09 to 2013–14
Population increase by state and territory 2008-09 to 2013-14

Source: ABS, 3101.0 – Australian Demographic Statistics, Jun 2014: Table 4, Estimated Resident Population, states and territories

Where is Western Australia’s population located?

  1. At June 2014, 79 per cent of Western Australia’s total population was located in the area of Greater Perth5, Over a number of years, population growth in Western Australia has been concentrated in the outer suburban areas of Greater Perth, specifically in:
    • Forrestdale – Harrisdale – Piara Waters,
    • Baldivis,
    • North Coogee,
    • Anketell – Wandi, and
    • Yanchep.6
  2. Future growth is also anticipated in Wanneroo, in particular Alkimos, Eglinton and Banksia Grove.
  3. Outside of Greater Perth, the most significant population growth is in Busselton in the south-west of the state and Karratha in the north of the state.7 There has been a decline in population in non-metropolitan areas of the state.8
  4. Western Australia has the second lowest population density of all states and territories in Australia, of one person per square kilometre (sq km). There is considerable variation within the state with the population density in Greater Perth of 315 people per sq km compared to 0.2 people per sq km for the rest of Western Australia. In the year to June 2014, the population density of Greater Perth increased by 7.5 people per sq km.9

Enrolment in Western Australia

  1. When the redistribution of Western Australia commenced on 1 December 2014, 1 504 413 electors were enrolled. By the projection time of 8 February 2017, it is projected that the size of the federal electoral roll for Western Australia will have grown by 6.02 per cent to 1 594 973 electors.
  2. Table E demonstrates that while enrolment across all electoral divisions is projected to increase during the period 1 December 2014 to 8 February 2017, the rate of growth is not projected to be consistent across the state. Projected growth varies considerably, ranging from 3.96 per cent for the Division of Forrest to 7.33 per cent for the Division of Brand. This is not unexpected and underpins the need for substantial boundary adjustment across divisions to cater for the dual challenges of disparate growth rates and the need for boundaries to be adjusted to create the 16th division.
Table E: Projected growth of existing divisions
Existing division Current enrolment as at 1 December 2014 Projected enrolment as at 8 February 2017 Projected growth
Number Percentage of quota: 94 026 Number Percentage of average enrolment: 99 686
Brand 106 310 113.06% 114 105 114.46% 7.33%
Canning 108 149 115.02% 114 782 115.14% 6.13%
Cowan 98 745 105.02% 105 304 105.64% 6.64%
Curtin 96 572 102.71% 101 818 102.14% 5.43%
Durack 92 805 98.70% 97 546 97.85% 5.11%
Forrest 100 700 107.10% 104 683 105.01% 3.96%
Fremantle 104 399 111.03% 111 250 111.60% 6.56%
Hasluck 102 067 108.55% 108 418 108.76% 6.22%
Moore 99 748 106.09% 105 638 105.97% 5.90%
O’Connor 95 704 101.78% 99 748 100.06% 4.23%
Pearce 107 896 114.75% 115 583 115.95% 7.12%
Perth 98 113 104.35% 104 840 105.17% 6.86%
Stirling 99 079 105.37% 105 461 105.79% 6.44%
Swan 98 298 104.54% 104 453 104.78% 6.26%
Tangney 95 828 101.92% 101 344 101.66% 5.76%
Total 1 504 413   1 594 973   6.02%

Note: Shading indicates where current or projected enrolment is outside the permissible range

  1. Table E also indicates that existing divisions in Western Australia fall into three categories:
    • where the current enrolment is more than 10 per cent above the current enrolment quota and must be corrected in this redistribution to meet the numerical requirements of the redistribution process – the Divisions of Brand, Canning, Fremantle and Pearce,
    • where the projected enrolment is more than 3.5 per cent above the projected average enrolment and must be corrected to meet the numerical requirements of the redistribution process – the Divisions of Brand, Canning, Cowan, Forrest, Fremantle, Hasluck, Moore, Pearce, Perth, Stirling and Swan, and
    • where the numerical requirements of the Electoral Act in relation to both current and projected enrolment is met and technically the existing divisions require no adjustment – the Divisions of Curtin, Durack, O’Connor and Tangney.
  2. he above highlights the need for the Committee to make significant changes to the current electoral boundaries. This need for boundary modification is caused by the requirement to create a new division which, of itself, generates significant consequential changes to existing divisions, with all divisions potentially affected.

  1. Sub-section 64(2) of the Electoral Act notes that the newspaper notices need not be published on the same day as the Gazette notice.
  2. This ascertainment was made using statistics supplied to the then acting Electoral Commissioner by the then acting Australian Statistician on 22 October 2014 in accordance with section 47 of the Electoral Act and published in the Australian Demographics Statistics, March 2014 Quarter (ABS Cat. no.3101.0) Table 8 on 25 September 2014
  3. ABS, 3218.0 – Regional Population Growth, Australia, 2013–14
  4. ABS, 3101.0 – Australian Demographic Statistics, Jun 2014: Table 4, Estimated Resident Population, states and territories
  5. ABS, 3218.0 – Regional Population Growth, Australia, 2013–14
  6. ibid
  7. ibid
  8. ibid
  9. ibid