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 New Zealand Prime Minister and Cabinet. The office exists by a long-established convention, which originated in New Zealand's former colonial power, the then United Kingdom of Great Britain and Ireland. The convention stipulates that the governor-general must select as prime minister the person most likely to command the support, or confidence, of the House of Representatives. This individual is typically the parliamentary leader of the political party that holds the largest number of seats in that chamber. The prime minister and Cabinet are collectively accountable for their actions to the governor-general, to the House of Representatives, to their political party, and ultimately