Viewers from the other 39 participating countries will also be able to vote for the new competitor.
A jury is currently considering letting the public have a 50 per cent stake in the Australian vote via televoting.
As the invite is a one-off, the contest won’t take place down under if Australia wins this year’s contest, but it will be allowed to send a participant to the 2016 Eurovision Song Contest.
Australia has until 16 March to decide who will represent them at the show.
Australia is set to compete in this year’s Eurovision Song Contest, as part of the competition’s 60th anniversary celebrations.
The nation’s contestant, who is yet to be chosen, will fight it out in the semi-final and grand final to be held in Vienna, Austria, alongside 39 other countries.