what is the prime minister's role?
Role of the Prime Minister in Australia.

Parliamentary Education Office (peo.gov.au)
Description
This graphic shows that the Prime Minister is the most senior minister in the Australian Government as well as being key spokesperson for Australia, the head of Cabinet and the leader of the government.
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Thanks for your question about the Prime Minister. They have many roles, including:
- chairing meetings in which the government discusses policies and examines bills – proposed laws
- selecting members of the government to be ministers
- leading Cabinet – the Prime Minister and ministers – in deciding government policy
- acting as the chief government spokesperson
- representing the Australian Government overseas
- advising the Governor-General about important issues such as the appointment of ambassadors and heads of government departments
- advising the Governor-General about constitutional matters
- deciding when to call a federal election and leading the government in the election.