The prime minister zeroed in on Gough Whitlam's It's Time address during his speech to the National Press Club on Thursday.

It was no coincidence Bill Shorten was at the same time preparing to take the stage at Bowman Hall in Blacktown to channel the same 1972 speech.

Anticipating the Labor leader, Mr Morrison's central theme was "now is not the time" for change.

Repeating the phrase almost two dozen times, he argued it was not the time to experiment on Labor and its "higher taxing, higher spending" agenda.

"Now is not the time to turn back," the prime minister said in Canberra.

"Now is the time to build our economy together and secure your future."

As voters prepare to go to the polls on Saturday, Mr Morrison insists he is hungry to continue to lead.

"It's been eight months since I have been in this job. It has been an incredible privilege and pleasure," he said.

"But I can tell you, I'm just getting started."

All polls are pointing to a Labor victory but the prime minister insists the contest will be close.

"Don't let anyone tell you that this election is run and done," Mr Morrison said.

"Don't let anyone tell you that your vote doesn't count, because it will, every single vote will count."

Mr Morrison ended his address by describing a "burning desire" to help people achieve their dreams.

"I will burn for you every day - every single day - so you can achieve your ambitions, your aspirations, your desires."

Earlier, the prime minister visited the crucial seat of Reid, arriving at the produce markets before dawn, channelling his opposite number yet again.

Mr Shorten had made the same market pilgrimage at the start of his five-week campaign.

People in Reid have bucked the national trend of high pre-polling and both leaders recognise there are still plenty of votes to win in the next 48 hours.

The Liberal Party is fighting to hold onto the electorate, which it holds by 4.7 per cent, following the retirement of former minister Craig Laundy.

Joined by wife Jenny and Liberal candidate Fiona Martin, the prime minister snaffled some chillies and an armful of herbs, insisting on paying for his haul.

"The coalition always pays its bills."

Mr Morrison has carefully marketed himself as a cap-wearing dag throughout his eight months as leader.

So it was no surprise one worker's pineapple headpiece caught his eye.

"It's not quite the mullet I saw in Tasmania but it's a pretty good looking hat," he said.

However wearing the tropical bonnet proved a brim too far.

"No ... I'm sorry to disappoint," the prime minister said.

Mr Morrison was warmly received as he wound his way through the aisles.

"Let's hope you come good on Saturday," one stall holder said.

But after he stopped to autograph a Vote 1 for Liberals sign scrawled on the back a cardboard box, there came a reality check from a worker standing nearby.

"Who was that?" the man asked as the prime minister walked away.

Australian Associated Press