In the aftermath of a by-election loss and a contentious conference motion declaring Zionism a form of racism, Green Party leader Zack Polanski found himself navigating a crisis that was less about electoral arithmetic and more about the soul of a rapidly growing movement. Standing before cameras in the early hours of Friday morning, he neither embraced nor repudiated the member-approved motion, choosing instead a path of deliberate ambiguity that satisfied almost no one. The episode revealed something older and more enduring than party politics: the difficulty of leading a democratic institut
Green leader defends post after Zionism motion and by-election loss
Our movement is so much bigger than one election or one motion.
So Polanski lost the by-election and then had to defend himself on this motion. Why didn't he just vote on it at the conference?
He didn't participate in the debate or the vote at all. That's what Lucas criticized him for—she said it showed a failure of leadership. He was focused on the by-election campaign, but his absence meant he didn't take a public stand either way.
But we should be clear: the motion passed anyway. His vote wouldn't have stopped it. The real question is what he does now that it's official party policy.
And what did he do? Did he endorse it or reject it?
He did neither, really. He said he doesn't believe in the old Zionist narrative he grew up with, and he called Israeli actions in Gaza genocide and racist. But when asked directly if Zionism is racism, he wouldn't say those exact words.
That's important to note. He described the displacement and genocide as racist, but he didn't answer the specific question about whether Zionism as an ideology is racism. That's a deliberate dodge.
Who was upset with him?
Everyone, basically. Caroline Lucas, his predecessor, said he should have been a strong critic of the motion. Prime Minister Burnham demanded he reverse it. Jewish organizations condemned it. But supporters of the motion wanted him to embrace it as policy.
So he was caught between two groups with irreconcilable demands. That's a real leadership problem, but it's also worth noting that no statement he could have made would have satisfied both sides.
Did the motion cost him the by-election?
The Greens still did well—they cut Labour's majority from over 11,000 to about 3,300. But they didn't win. The motion definitely overshadowed the final days of the campaign.
We don't have polling data showing how much it affected the result, so we can't say for certain it cost him the seat. But it clearly didn't help.
What happens next?
That's unclear. Lucas said she wants to see if Polanski will show the leadership that was missing at the conference. The party is deeply divided—four of five Green MPs opposed the motion, the co-deputy leaders were split, and the deputy leader in Wales resigned.
The real test is whether Polanski can hold the party together or whether these divisions will continue to fracture it. His statement that night didn't resolve anything.
Le Pouls
- A motion passed at the Green Party's Brighton conference — declaring Zionism a form of racism and calling for a single Palestinian state across all of historic Palestine — instantly became official party policy, triggering a crisis Polanski had done nothing to prevent.
- Polanski, himself Jewish and raised in a Zionist household, had neither spoken nor voted during the conference debate, a silence that former leader Caroline Lucas publicly condemned as a failure of leadership.
- Four of five Green MPs opposed the motion, the party's Welsh deputy leader resigned over it, and condemnation arrived from the European Green Party, the Jewish Leadership Council, and Prime Minister Andy Burnham, who demanded the motion be reversed.
- Polanski's response — describing Israeli actions as genocide and racist while refusing to say 'Zionism is racism' — left both supporters and opponents of the motion feeling unheard and unled.
- The Greens finished second in the Holborn and St Pancras by-election, reducing Labour's majority significantly but failing to win, as the controversy consumed what might otherwise have been a moment of momentum for the party.
In the aftermath of a by-election loss and a contentious conference motion declaring Zionism a form of racism, Green Party leader Zack Polanski found himself navigating a crisis that was less about electoral arithmetic and more about the soul of a rapidly growing movement. Standing before cameras in the early hours of Friday morning, he neither embraced nor repudiated the member-approved motion, choosing instead a path of deliberate ambiguity that satisfied almost no one. The episode revealed something older and more enduring than party politics: the difficulty of leading a democratic institution when the values of its members outpace the judgement of its representatives.
Zack Polanski arrived before the cameras in the early hours of Friday having just watched his party finish second in the Holborn and St Pancras by-election. But the real reckoning was not the vote count — it was a motion passed three days earlier at the Green Party's annual conference in Brighton, which declared Zionism a form of racism and called for a single democratic Palestinian state across all of historic Palestine, language that encompasses modern-day Israel. Under party rules, member-approved motions automatically become official policy. Polanski, the party leader and himself Jewish, had not participated in the debate or cast a vote.
Former leader Caroline Lucas did not wait for the by-election result to weigh in. She told the BBC that Polanski had failed to show leadership, calling the motion dangerous and divisive, and stopped just short of calling for his resignation. When Polanski finally addressed the motion directly, he offered something carefully constructed but ultimately evasive: he described how he had grown up believing in Zionist ideals, how he had since educated himself, and how he now saw what was happening in Gaza as genocide and as racist. But when pressed on whether Zionism itself is racism, he would not say so plainly.
The strategy — reassuring Jewish members that no one would be excluded on the basis of faith, while not explicitly rejecting the motion — satisfied neither camp. Those who had voted for it wanted their leader to own it. Those who opposed it wanted him to disown it. The fractures ran deep: four of the five Green MPs had voted against the motion, the party's Welsh deputy leader resigned, and condemnation came from the European Green Party, the Jewish Leadership Council, and Prime Minister Andy Burnham, who called the motion completely wrong and demanded it be reversed, arguing it effectively ruled out a two-state solution.
Polanski insisted he would remain as leader. He pointed to the party's extraordinary growth — from around 60,000 members when he stood for the leadership to 220,000 now — as evidence that the movement was larger than any single motion or any single election. Whether that growth would prove a source of strength or the very engine of the party's internal contradictions remained, as the night ended, an open question.
Zack Polanski stood before the cameras in the early hours of Friday morning, having just watched his party finish second in the Holborn and St Pancras by-election. He had come to defend his leadership of the Green Party, but the real test was not the election result—it was a motion that had passed at the party's annual conference in Brighton three days earlier, one that declared Zionism a form of racism.
The motion, approved by party members, defined Zionism as an ideology supporting "an ethnonationalist Jewish state" and called for a "single democratic Palestinian state in all of historic Palestine," language that encompasses modern-day Israel. Under Green Party rules, member-approved motions automatically become official party policy, though they need not appear in the manifesto for the next general election. The problem was that Polanski, the party leader and himself Jewish, had not participated in the debate or voted on it at all.
Former party leader Caroline Lucas did not wait for the by-election result to speak. She told the BBC that Polanski had failed to show leadership, calling the motion "dangerous" and "divisive." She said she would have hoped he would be "a very strong critic" of it. When asked whether he should step down, Lucas hedged slightly—"let's just see what happens in the coming days and weeks"—but the message was clear: his absence from the vote was a dereliction of duty.
When Polanski finally answered questions about the motion, he refused to take a clear position on its central claim. Asked directly whether he agreed that Zionism is racism, he pivoted to his own evolution. He had grown up in a Zionist household, he said, believing in the idea of "a land without a people and a people without a land." But he had educated himself, and he no longer believed that was true. What he saw now was "an ongoing genocide and the displacement of the Palestinian people," which he called "clearly racist." When pressed again on whether Zionism itself is racism, he repeated that the displacement and genocide were racist—but he would not say the word Zionism is racism.
His strategy was to reassure Jewish members while not explicitly rejecting the motion. "Nobody will be excluded in the Green Party based on faith and religion," he said. He pointed to the party's growth under his leadership, from 55,000 to 60,000 members when he was running for leader to 220,000 now. "Any member is entitled to their opinion," he added. "We're a democratic grassroots party." But this satisfied neither side. Those who supported the motion wanted him to embrace it as policy. Those opposed wanted him to distance himself from it entirely.
The motion had exposed fractures within the party that went deeper than one vote. Four of the five Green MPs had opposed it. The party's co-deputy leaders were split. The deputy leader in Wales resigned over it. The European Green Party condemned it, as did the Jewish Leadership Council and the Board of Deputies of British Jews. Prime Minister Andy Burnham, speaking from Berlin, called the motion "completely wrong" and said it showed "terrible judgement." He demanded that Polanski reverse it and ensure it does not become Green Party policy. Burnham argued that the motion effectively ruled out a two-state solution between Israel and Palestine.
The by-election itself had been overshadowed by the controversy. The Greens had hoped to overturn a substantial Labour majority in the seat vacated by former Prime Minister Sir Keir Starmer. They did not succeed. Labour's Sagal Abdi-Wali won, though the Green performance was strong enough to reduce Labour's majority from 11,572 to 3,364. Polanski's response, in the early hours after the loss, was to insist he would stay on. "Yes I've taken a loss tonight," he said, "but our movement is so much bigger than one election or one motion." The question now was whether the party could hold together, or whether the divisions exposed by the motion would continue to fracture it.
Citations marquantes
I would have hoped he would have been a very strong critic of this motion.— Caroline Lucas, former Green Party leader
It was completely wrong for the party to support the motion and this showed terrible judgement.— Prime Minister Andy Burnham