Green Party leader Zack Polanski has affirmed his intention not to resign following his defeat to Labour's Sagal Abdi-Wali in the Holborn and St Pancras by-election [1]. This electoral setback occurred amidst a contentious period for the party, marked by a recently passed motion that equates Zionism with racism and advocates for the abolition of the state of Israel [1, 4]. The by-election result and the surrounding controversy have intensified scrutiny on Polanski's leadership and the Green Party's strategic direction within the UK political landscape [2].
What Happened
- Labour's Sagal Abdi-Wali secured victory in the Holborn and St Pancras by-election, successfully retaining the seat for the Labour Party [1, 7]. This outcome was widely anticipated by some, allowing Labour to credibly claim reassurance for Andy Burnham in the high-stakes battle for the left of British politics [7, 10].
- Green Party leader Zack Polanski, who contested the seat, was defeated by Abdi-Wali, despite the Green Party managing to increase its overall vote share compared to the 2024 general election [2].
- In the immediate aftermath of the defeat, Polanski publicly defended his leadership, stating unequivocally that he would not step down from his position [1].
- The by-election was triggered by the resignation of former Prime Minister Keir Starmer from the Holborn and St Pancras seat in September [4]. The contest was largely viewed as a two-horse race between Labour and the Green Party [4].
- A significant backdrop to the Green Party's campaign was a controversial motion passed by the party the previous weekend, which equated Zionism with racism and called for the abolition of the state of Israel [1, 4].
- Reports from activists and councillors representing both Labour and the Liberal Democrats indicated that numerous voters had explicitly informed them they would not be supporting the Green Party due to its adoption of this motion [1].
- The policy has generated considerable internal dissent, with Vivien Lichtenstein, the leader of the Jewish Greens, publicly calling for Polanski's resignation over the 'Zionism is racism' policy [3].
- Further criticism emerged from Caroline Lucas, the Greens' former leader and first Member of Parliament, who specifically criticized Polanski for a perceived lack of leadership, noting his absence from the debate and vote on the contentious policy last weekend [3].
- Analysts observed that Polanski had the “cloud of the ‘Zionism is racism’ row hanging over his head” during the campaign [2], and some suggested that despite a “real chance of a Green byelection win,” Polanski’s “bad decisions” ultimately cost his party dearly [5].
Why It Matters
The by-election result, despite an increased vote share, places considerable pressure on Zack Polanski's leadership, particularly in light of the ongoing “Zionism is racism” controversy [2, 8]. The internal dissent, highlighted by calls for his resignation from the leader of the Jewish Greens and criticism from former leader Caroline Lucas, suggests a significant challenge to party unity and direction [3]. Polanski's ability to navigate this internal division and steer the party through the fallout from the controversial policy will be critical in determining the Green Party's future trajectory and whether it can move beyond its current “fringe party” status [2]. The defeat, while disappointing, may also offer a degree of relief for some within the party, potentially allowing for a period of “contrition and reflection” as suggested by some analysts [8, 10].
For the Labour Party, Sagal Abdi-Wali's victory in Holborn and St Pancras serves as a significant reassurance, particularly for figures like Andy Burnham, in the broader context of the competition for the left-wing vote in British politics [4]. The by-election, which was considered a high-stakes two-horse race, saw Labour successfully fend off a challenge from the Greens, thereby maintaining its hold on a key urban constituency [4]. This outcome is also noted to echo national opinion polls, suggesting that the result aligns with broader public sentiment and potentially reinforces Labour's current standing [5]. The result could be interpreted as a validation of Labour's strategy in appealing to its traditional voter base while navigating challenges from smaller parties on the left.
The by-election provides a tangible example of how specific policy decisions can directly influence electoral outcomes. The reported feedback from voters to Labour and Liberal Democrat councillors, indicating that the Green Party's anti-Zionism motion deterred their support, underscores the potential electoral cost of controversial stances [1]. This suggests that while such policies may resonate with a segment of the party's base, they can alienate a broader electorate, impacting the party's ability to expand its appeal and secure victories in competitive races [1]. The incident highlights the delicate balance political parties must strike between ideological purity and pragmatic electoral strategy.
Signals To Watch (Next 72 Hours)
- Any further public statements or defensive actions from Zack Polanski regarding his leadership, the party's controversial “Zionism is racism” policy, or the by-election outcome [1, 2].
- Reactions or public commentary from other prominent Green Party figures, including former leader Caroline Lucas, which could indicate the extent of internal party divisions or a unified response to the challenges [3].
- Formal or informal discussions and potential internal reviews within the Green Party regarding the “Zionism is racism” motion, its implementation, and its implications for party unity and future electoral strategy [1, 4].
- Public commentary from leaders or spokespersons of other political parties, such as Labour or the Liberal Democrats, on the Green Party's internal challenges and the broader implications of the Holborn and St Pancras by-election result [1, 7].
- Media analysis and polling data released in the coming days that may offer further insights into public perception of the Green Party following the by-election and the controversy, potentially indicating shifts in voter sentiment [2, 8].
- Any organized responses or statements from the Jewish Greens or other affiliated groups within the Green Party, which could escalate or de-escalate the internal pressure on Polanski and the party leadership [3].
- The Green Party's communication strategy in addressing the criticism and managing the fallout from both the by-election loss and the policy controversy, particularly concerning its messaging to potential voters and its membership [1, 2].
The immediate future will test Zack Polanski's leadership and the Green Party's capacity to navigate significant internal and external pressures.
Sources
- Polanski defends leadership of Greens and says he will not step down after byelection defeat by Labour – UK politics live — Guardian Politics · Oct 09, 2026
- Did the Zionism row lose it for Zack Polanski? – podcast — Guardian Politics · Oct 09, 2026
- Leader of Jewish Greens calls for Zack Polanski to resign after byelection loss — Guardian Politics · Oct 09, 2026
- Labour fends off Green party to win Holborn and St Pancras byelection — Guardian Politics · Oct 09, 2026
- A promising future now looks perilous for election loser Zack Polanski. He sowed, now he reaps | John Harris — Guardian Politics · Oct 09, 2026
