Adam Bandt just delivered a speech that would make Donald Trump blush — with approval.

Not on the content: the Greens leader unabashedly used his National Press Club address on Wednesday to again promote his movement's progressive ambitions to tax big multinationals, banks and supermarkets for new welfare and entitlement handouts.

Trump would do (and did) the exact opposite.

But in style, it was pure Donald.

Which creates a unique moment for Anthony Albanese and his strategy of dealing with Labor's arch left-flank enemies, particularly if Australians deliver a hung parliament after the coming election.

From the opening sentence, Bandt's speech was chock-a-block with Trump's favourite rhetorical flourishes – led by catastrophism and conspiracy.

"People", Bandt declared from the outset, "are drowning". 

"Millions of people are falling further and further behind."

While Bandt may not have gone as far as Trump's famous 2017 inauguration day "American carnage" address, the vibe is unmistakably similar.

"Millions of people are being robbed, fleeced and plundered by big corporations and billionaires in a heist facilitated and enabled by the politicians from Labor and the Liberals," said Bandt.

Trump super-charged his populist appeal on the road to the White House in 2016 and his failed bid four years later by declaring the political system "rigged" against ordinary Americans. Bandt used the term repeatedly on Wednesday.

"It's not some natural occurrence that has rerouted the economy away from the wages of working people and into the profits of big corporations," Bandt said.

"It's been rigged by design.

"People are angry. They're right to be."

Many voters will agree the system does feel rigged, particularly younger Australians locked out of the housing market. And there is plenty of evidence to suggest he's right on that score.

And whether such rhetorical Sturm und Drang will work for Bandt is not in doubt. The party enjoys a rusted-on primary support level across the electorate somewhere between 12 per cent to 14 per cent, according to polls.

The question – as it is for Trump, whose re-election ambitions need to overcome the fact that he suffers from a high floor and low ceiling in primary numbers — is whether Bandt's doom-and-gloom approach can win a larger audience.

Certainly, the Greens leader spoke up a big game, revealing the party is eying off five new seats it believes it can win.

They include Victorian Labor-held electorates of Wills and Macnamara, which Bandt says could change hands if just 300 voters shift to the Greens compared to the 2022 election, as well as Adelaide's Sturt, held by the Liberals, and another Labor seat, Perth, in WA.

It's a swag of potential lower house seats that would put Bandt in the box seat for a hung parliament.

But Labor and Albanese are seeing a growing opportunity in Bandt's rhetorical approach.

Albanese is quietly convinced that mainstream voters, as the election nears, will turn off the Greens' burn-the-barn-down approach.

If Bandt pushes too far, he runs a risk of making himself look so unreasonable to the political centre that Albanese could reject any formal post-election governing agreement with the Greens, avoiding the political dangers of the 2010 deal Julia Gillard signed with Bob Brown.

"Bandt has made the Greens more of a populist leftist party than a demonstrated partner in government", said one well-placed Labor supporter who watched Bandt's performance on Wednesday.

In that sense, a hung parliament after the next election would be something of a continuation of the current dynamic. Albanese works with the Greens on a case-by-case basis and collaborates with the Coalition and Teals when it suits.

Where this all lands is the critical question.

The Coalition took a great deal of cheer from the NT election, where Labor was hammered on both flanks — by crime issues on the right and the ongoing Greens campaign against fossil fuel development at Middle Arm on the left.

Albanese will have similar challenges come the election.

The big parties are looking for any sign that voters will return to the majors after the collapse in primary support for Labor and the Coalition in 2022.

In dialling up the rhetoric, Bandt may well be helping them out.