On 13 June 2026, opening his weekly Macro and the Mortgage Show with co-host Catherine Cashmore, Leith van Onselen told his audience he could not take a fourth Sky News interview that evening because he had somewhere else to be. He was headed, he said, to “a fundraiser for a certain political party” in Melbourne — adding, with a knowing aside to his listeners: “I guess you can all guess what that is.”

“I’m off to a uh a fundraiser for a certain political party. Um I guess you can all guess what that is in Melbourne.”

Leith van Onselen — Macro and the Mortgage Show, 13 June 2026

For an audience that has followed van Onselen’s decade-long campaign against mass immigration and its consequences for housing affordability, the party in question required no elaboration. One week later, on the 20 June episode of the same show, he made the implication explicit.

Responding to viewer calls for him to enter politics, van Onselen moved from adviser to candidate in a single sentence. He said he would be willing to counsel One Nation on economic policy — but then went further, naming the specific ticket and the specific chamber.

“Or alternatively, if they want to put me on the top of the Victorian Senate ticket, the federal election, I’ll give it a crack. Why not?”

Leith van Onselen — Macro and the Mortgage Show, 20 June 2026

He added, unprompted, what he would most relish about a Senate role: “I would love nothing more than to be able to skewer federal bureaucrats at Senate estimates. Like I would — I would put them on toast.”

Three days later, on 23 June 2026, Pauline Hanson appeared on Channel 7 Sunrise. Responding to a viewer question about whether One Nation had the experience to govern, she listed the team she was assembling. Among them: an economist. She did not name him.

“Barnaby is an accountant. I’m bringing on an economist. I have, you know, a CEO of companies. So we have people with that background knowledge and experience.”

Pauline Hanson — Channel 7 Sunrise, 23 June 2026

A Candidacy That Writes Itself

Van Onselen has not arrived at One Nation’s door by accident. For the better part of a decade his analytical output at MacroBusiness has converged on a set of positions — mass immigration as the primary structural driver of housing unaffordability, international student visa abuse, capital shallowing from population-driven demand, and the failure of mainstream parties to act on any of it — that sit squarely at the centre of One Nation’s federal platform.

His framework is not ideological populism. It is data-driven economic analysis that arrives at conclusions One Nation has long championed on instinct.

On the 20 June podcast van Onselen also offered a telling window into how he sees the party’s policy agenda — supportive of the direction on immigration and tax reform, but precise about where he would revise the execution. He argued income splitting was unaffordable and should be replaced with lower marginal tax rates and a leaner public service. He suggested Hanson’s National Press Club framing on multiculturalism would have landed better had it centred on shared values rather than monoculture. He noted he had met Hanson previously, that she knew who he was, and that she was “very nice.”

These are not the observations of an outside commentator. They are the policy refinements of someone who has already thought through what the brief would look like.

The Electoral Context

Van Onselen’s signal arrives at a moment of genuine One Nation electoral momentum. The Roy Morgan poll cited in the same Sunrise interview showed One Nation primary support at 31.5%, ahead of Labor at 27% and the Coalition at just over 17%. Hanson told the program she had not spoken to Opposition Leader Angus Taylor since approximately 2019 — a measure of how dramatically the established order has shifted.

One Nation already holds Senate representation in New South Wales and Western Australia following the 2025 federal election. Victoria is the logical next expansion target. Topping that ticket with a credentialled economist who has spent fifteen years building a public profile on precisely the issues driving One Nation’s surge — immigration, housing, living standards — would be a high-quality acquisition by any measure.

What This Means for Housing Policy Discourse

APN has tracked van Onselen’s commentary closely. His significance to property market analysis is not incidental — his work on the relationship between net overseas migration, rental vacancy rates, and advertised rent growth has been among the most consistently rigorous in the Australian independent media. The Canada and New Zealand comparisons he presented on the 20 June podcast — countries where cuts to immigration produced measurable, rapid falls in rental inflation — represent precisely the kind of empirical case that is absent from mainstream parliamentary debate.

A van Onselen Senate presence would inject that analytical standard into estimates hearings. He said as much himself: he would put federal bureaucrats on toast. APN does not doubt him.

APN does not take a position on One Nation’s broader platform. What APN does track is the quality and integrity of economic analysis applied to property markets and housing affordability. On that specific axis, van Onselen’s work has consistently met a high standard — and the debate in this country would be better served by having it prosecuted in a Senate chamber.