The Prime Minister has pledged her support for the expansion of the size of the ACT Legislative Assembly.
Chief Minister Katy Gallagher has received a copy of a letter from Prime Minister Julia Gillard to Minister for Territories Simon Crean indicating the ACT should be allowed to set the size of its parliament.
If an amendment to the Self Government Act passed the House of Representatives and Senate, it would clear the way for the newly sworn in ACT Assembly to increase its size from the current 17 members.
The change would require a special majority - two thirds - of the Assembly to agree.
Ms Gallagher says the change would be a reasonably high priority for her reelected Government.
An increase to the size of the Assembly has the support of all three parties, however the challenge would be agreement on the number of MLAs and breakdown of electorates.
Ms Gallagher believes the best model would be for an increase to 25 MLAs broken up into five electorates of five, while the Greens have pushed for three electorates of seven for a total of 21.