Western Australia’s electoral boundaries are reviewed every four year, two years after a State election. This is done to ensure that, as the number and locations of people change over time, all electorates will contain an acceptable range of electors.
The process for reviewing electorates is prescribed in Part llA of the Electoral Act 1907.
The 2019 review of electoral boundaries will be used at the next State election on 13 March 2021.
Any by-election that occurs prior to 2021 will be conducted in accordance with the current boundaries from the 2015 Distribution.
These boundaries remain in effect until the 2021 State election.
Previous State electoral distributions
Reviews of the State's electoral boundaries have been undertaken in Western Australia since 1902. Details of every review must be printed in the Government Gazette. State Law Publisher has an online record of Government Gazettes issued since 1906.