On Monday, the PM told reporters it was “for others to judge” whether Premiers were doing the right thing but that they had to “explain the decisions”.

A statement released to the ASX on Monday morning blamed the poor take-up on tightened border restrictions and the COVID-19 outbreak in Melbourne.

Annastacia Palaszczuk has dealt an enormous blow to interstate travel by advising her citizens not to visit NSW – and hinting again she could formally close the border.

Victorian Premier Daniel Andrews has requested all flights to Melbourne be diverted for the next fortnight as the state battles to get to grips with an apparent second spike of coronavirus cases. The announcement came just hours after Queensland said it open its borders to all states except Victoria, and South Australia U-turned and insisted