Scott Morrison, 53, a former tourism marketing chief who has been prime minister for almost four years, said the opposition Labor party and its leader, Anthony Albanese, 59, were unknown quantities. Economic stewardship and national security will be at the forefront of his Liberal-National coalition campaign. The poll is scheduled for May 21. Anthony Albanese, the leader of the opposition, has previously served as deputy prime minister BIANCA DE MARCHI/EPA With unemployment near a 48-year low of less than 4 per cent, the economy likely to return to its pre-pandemic upward trajectory within weeks and a volatile global security outlook, Morrison told Australians this was no time for change. However,