Legislative Assembly of Queensland Tags: Legislature.The Legislative Assembly of Queensland is the sole chamber of the unicameral Parliament of Queensland. Elections are held approximately once every three years. Voting is by the Optional preferential voting form of the Alternative vote system. thumbnail election date leader 2012-05-15 is part of Parliament of Queensland last election date 2012-03-24 leader Fiona Simpson location Parliament House Brisbane, Queensland, Australia, Brisbane number of members 89 political party in legislature Australian Labor Party, Independent (politician), Liberal National Party of Queensland, Palmer United Party, Katter's Australian Party political party of leader Liberal National Party of Queensland Learn more... Loading...