MLA and MLC boundaries are updated every four years prior to the state elections. The current electoral dataset depicts the State Electoral Districts and Regions that were used in the State Election of March 2021. These districts and regions are described by deposited plans lodged with Landgate and were published under the Electoral Act 1907, in the Government Gazette on 27th November 2019.
The current state electoral dataset that depicts the MLA District and the MLC Region boundaries remain the current dataset until the next state election is declared. Therefore, if a By-election is declared for any district prior to the next State General Election, this is the dataset that must be used.