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Green Party Leader Zack Polanski Hits New Low in Favorability Poll

An Ipsos survey found Green Party leader Zack Polanski’s favorability has dropped to minus 36 following a party vote on Zionism and a by-election defeat.

Published October 17, 2026 at 7:01 PM EDT

The short answer

An Ipsos survey found Green Party leader Zack Polanski’s favorability has dropped to minus 36 following a party vote on Zionism and a by-election defeat.

Green Party Leader Zack Polanski Hits New Low in Favorability Poll

The Facts

Who
Zack Polanski, Green Party leader; Ipsos; Vivien Lichtenstein, leader of the Jewish Greens.
What
Public favorability for Green Party leader Zack Polanski has reached a new low of minus 36 percent.
When
October 9 to October 13, 2026
Where
United Kingdom
Why
The decline in support follows a party motion describing Zionism as racism and a by-election defeat, leading to calls for resignation and threats to local coalitions with the Labour Party.

An Ipsos survey conducted between October 9 and 13 found that public favorability for Green Party leader Zack Polanski has reached its lowest point. The poll shows that 52 percent of the public now holds an unfavorable view of Mr. Polanski, a six-point increase since September. Only 16 percent of respondents reported a positive view, resulting in a net favorability rating of minus 36.

The decline follows a Green Party conference in Brighton where members passed a motion describing Zionism as a form of racism. Mr. Polanski did not participate in the vote, but the decision has led to internal and external criticism of his leadership. Additionally, the poll was conducted shortly after Mr. Polanski was defeated in a by-election for the Holborn and St Pancras constituency.

Data from the survey indicates a shift in support among key demographics. Among voters under the age of 35, Mr. Polanski’s net favorability score fell from plus 16 in April to plus two in October. Similarly, among those who voted for the Labour Party in 2024, his standing dropped from a net score of plus seven in April to minus 24 in October. While opposition remains highest among older demographics, the findings suggest a loss of support among groups that previously viewed him more favorably.

The dispute over the "Zionism is racism" motion has also affected the party's internal stability and its external alliances. Vivien Lichtenstein, the leader of the Jewish Greens, has called for Mr. Polanski’s resignation and stated she is considering leaving the party. Furthermore, the Labour Party has issued an ultimatum to local Green groups in shared coalitions, stating they must disown the motion or lose Labour's support. This development could alter how local governments are managed in districts where the two parties currently work together.

The polling also places Mr. Polanski’s standing in the context of other national figures, where his minus 36 rating is currently the lowest among national party leaders. By comparison, Nigel Farage of Reform UK holds a minus 31 rating, while Prime Minister Andy Burnham remains the only senior politician with a positive net score at plus eight. Keiran Pedley of Ipsos noted that Green voters are now nearly as positive toward Burnham as they are toward their own leader. Future developments will likely depend on how the Green Party responds to the Labour Party's ultimatum and internal calls for leadership changes.

Timeline of what happened

Key dates and decisions, in the order they occurred.

  1. April 1, 2026

    Poll shows higher favorability ratings

    Mr. Polanski held a plus 16 rating with under-35s and plus 7 with Labour voters.

  2. September 1, 2026

    September favorability recorded

    Unfavorable views were six points lower than the October level.

  3. October 9, 2026

    Ipsos poll fieldwork begins

    A total of 2,257 British adults were surveyed online through October 13.

  4. October 17, 2026

    Poll results published

    Poll results released showing a net favorability of minus 36.

Summaries are written by The Plain Record to state the facts of a story plainly and without political slant. Drafted with AI assistance and checked against the source record before publication. See how we report, or report a correction.

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Questions readers ask

What happened: Green Party Leader Zack Polanski Hits New Low in Favorability Poll?

Public favorability for Green Party leader Zack Polanski has reached a new low of minus 36 percent.

Who is involved?

Zack Polanski, Green Party leader; Ipsos; Vivien Lichtenstein, leader of the Jewish Greens.

When did this happen?

October 9 to October 13, 2026

Where did this happen?

United Kingdom

Why does this matter?

The decline in support follows a party motion describing Zionism as racism and a by-election defeat, leading to calls for resignation and threats to local coalitions with the Labour Party.