The Prime Minister calls the next election for May 21, 2022.

After months of unofficial campaigning - the Prime Minister has called the election for May 21, in what's shaping up to be a tight contest. Scott Morrison has admitted his government is not perfect, but implored voters to stick with what's familiar while the Opposition leader promises to unite the country.

Australian Prime Minister Scott Morrison arrives to speak to the media announcing a 21 May election Source: AAP