At the moment the Federal and State Governments are elected at different times. This means getting an effective Coalition of Australian Governments (COAG) is problematic. Often when COAG is convened on a specific topic, a Minster(s) from the Sate Governments might not be available due to a State election. Having both Federal and State Governments being elected on the same day would alleviate this situation, Plus one less visit to the polls.