Donald Trump and Peter Dutton have both embraced populism. Are working-class voters buying it?

This year, the Teamsters did not join most other unions in quickly endorsing Democratic incumbent Joe Biden before he stepped aside for Vice President Kamala Harris.

The Teamsters’ president, Sean O'Brien, almost got into a fight with a Republican senator in a committee hearing in 2023 after calling him a “greedy CEO who acts like he’s self-made”. Nonetheless, he got an invitation to speak at this year’s Republican National Convention. He praised Trump as a “tough SOB”, but then blasted various businesses and business organisations for being anti-union, to the discomfort of the audience.

The Teamsters ultimately endorsed neither candidate. However, they released polling showing nearly 60% of their members supported Trump compared to a third for Harris.

Trump-era Republicans frequently praise “union workers” rather than actual unions. When Senators JD Vance (now Trump’s running mate) and Josh Hawley supported the striking United Auto Workers last year, they criticised the union’s leadership. But they are happy to be seen as being on the side of unionised workers against big businesses who send manufacturing jobs overseas, a trend Trump promises to reverse.

The term “union workers” prompts conservative nostalgia, especially for a group like the Teamsters with their mostly male membership and reputation for toughness. It evokes the anti-communist, blue-collar workers of the 1960s and ‘70s who supported Nixon and brawled in the streets with college-educated anti-Vietnam War protesters.

That is not the only nostalgic element. Through heavily protectionist measures, Trump is promising to restore millions of manufacturing jobs to the United States – the kinds of jobs that used to be largely unionised. He also promises to roll back environmental regulations to expand mining, drilling and fracking on federal land. Again, these are the kinds of jobs often associated with “union workers”.

When Trump and others praise “union workers”, they are not really talking about unions, but a certain type of blue-collar job they are promising to create and protect. “Union” in this context has the positive connotation of well-paid, stable work.

But Trump claims it is his policies that will guarantee these jobs, making unions themselves virtually irrelevant.

Where Liberals won’t follow

Dutton may praise workers, but he is unlikely to add the prefix “union” anytime soon. It is hard to imagine any Liberal leader courting the support of a union because Australia’s party system effectively enshrines the country’s adversarial industrial relations system in its politics.

The Australian Labor Party began as the parliamentary wing of the union movement, and to this day affiliated unions are entitled to 50% of delegates at party conferences. American unions are not linked to the Democratic Party in the same way.

This does not mean the votes of union members are off-limits to other parties. In 2006, then-economist (now Labor MP) Andrew Leigh estimated about a third of union members voted for the Coalition on a two party-preferred basis from 1966 to 2004. But Liberals will not appeal to these voters as “union workers” in the same way Republicans do.