The periodic redrawing of electoral boundaries is required by law to maintain electoral divisions of roughly equal enrolment size within a state or territory. Redrawing of boundaries is known as a redistribution.

During the expected life of the 43rd Parliament there will be redistributions in Victoria and South Australia because of the seven year provision in the Commonwealth Electoral Act 1918. The number of electoral divisions in these states will remain unchanged.

A redistribution of the Australian Capital Territory scheduled for later in the Parliament will be deferred until after the next election as it is scheduled to fall within 12 months of the deemed expiration of the House of Representatives.

There are not expected to be redistributions in any states or territories brought about by the representation entitlement trigger which determines the number of members a state or territory is entitled to in relation to its population.