Prime Minister of Australia Prime Minister of Australia The Prime Minister of Australia is the head of government of Australia. The individual who holds the office is the most senior Minister of State, the leader of the Cabinet. The Prime Minister also has the responsibility of administering the Department of the Prime Minister and Cabinet, and is the chair of the National Security Committee and the Council of Australian Governments. The office of Prime Minister is not mentioned in the Constitution of Australia but exists through Westminster political convention. The individual who holds the office is commissioned by the Governor-General of Australia and at
Prime Minister of Sri Lanka established the Prime Minister was the head of government therefore held the most powerful political office of the country at the time. This changed with a constitutional change in 1978, when the Executive Presidency was created, making the President both head of state and head of government. Until 1978 the Prime minister was also the Minister of Defence and External Affairs. The Prime Minister is appointed by the President as a member of the cabinet of ministers. In the event the post president is vacant, the Prime Minister becomes the acting president until Parliament convenes to elect a successor or