On the first day of this year, socialist US senator Bernie Sanders stood alongside newly sworn-in New York Mayor Zohran Mamdani, who had won a million votes on a platform of free childcare, free transport and higher taxes for the rich. A month later in the United Kingdom, Greens leader Zack Polanski declared that Labour could no longer take progressive voters for granted after his party seized a seat from the government in a byelection, promising to tax the super-rich.
The Australian Greens have been making similar pledges for most of this year, but polls show they have gone nowhere.
"There's eternal frustration that we haven't cracked through more," one Greens insider said.
The party's stagnation has become a source of head-scratching even outside the Greens, as Labor's primary vote declines while the minor party fails to pick up the slack. Meanwhile, One Nation's support has surged.
These questions came into sharp focus this week when Larissa Waters, a well-liked consensus-builder, resigned as Greens leader for health reasons. The party quickly moved to elect Senator David Shoebridge, a hard-left figure, in a contested ballot, hoping his energy can replicate the Mamdani wave. The party has long hovered at around a 12 per cent share of the federal vote, and some within the party wonder whether a more unashamedly populist approach could break that ceiling.