South Australian Labor Senator Penny Wong says the opposition in no way believes it has the federal election in the bag.
On the first day of the campaign for the March 18 poll Senator Wong joined Nadia Clancy, the party's candidate for the key marginal Adelaide seat of Boothby.
"I know that the coalition are suggesting that we think we've got it in the bag," she said in Glenelg on Thursday.
"Well we don't. We understand how hard it is to win government."
Senator Wong said she expected Prime Minister Scott Morrison to "campaign on fear" in the lead-up to the poll.
"He can't campaign on his record because his record is cuts and chaos," she said.
"He can't campaign on stability because he hasn't got any.
"The only thing that he can campaign on is fear."
Senator Wong said Boothby, held by Liberal Nicolle Flint with a margin of just over two per cent, was critical for Labor.
But she said the party would campaign hard in every South Australian seat.
"We want to deliver a Labor government for Australia," she said.
"We want to do deliver a Labor government that does the right thing by the Australian people on schools, hospitals, the river Murray and climate change."
"Elections are hard fought and we know this is going to be a hard-fought election."
Labor has not held Boothby since 1949, but Ms Clancy said she believed she could take it for Labor after a change in the seat's boundaries.
"We now have a lot more people here who are keen for a change," she said.
"I'm also up against someone who doesn't reflect the values of people in this electorate the same way I do."
