Original: The Commonwealth Parliament and all the state and territory legislatures operate within the conventions of the Westminster system , with a recognized Leader of the Opposition , usually the leader of the largest party outside the government , and a Shadow Cabinet of Opposition members who '' shadow '' each member of the Ministry , asking questions on matters within the Minister 's portfolio .
Simplified: They have a recognized Leader of the Opposition , usually the leader of the largest party outside the government . There is also a Shadow Cabinet of Opposition members who '' shadow '' each member of the Ministry , asking questions on matters about the Minister 's responsibilities .