Zack Polanski, leader of the Green Party, faced scrutiny amid an ongoing antisemitism controversy as voters prepared to select a new member of parliament for the Holborn and St Pancras constituency in North London. The by-election, triggered by the departure of Labour leader Sir Keir Starmer, has drawn significant attention due to the Greens’ recent internal decision characterizing Zionism as a form of racism.

Polanski campaigned actively alongside supporters, aiming to challenge Labour’s longstanding dominance in the seat, which has been held by the party since its establishment in 1983. Despite his efforts, Labour candidate Sagal Abdi-Wali remained the favored contender according to bookmakers.

The antisemitism row emerged after the Green Party membership endorsed a motion labeling Zionism as racist, a position that has prompted criticism from various political figures. Greater Manchester Mayor Andy Burnham publicly condemned the motion, describing it as “completely wrong” and calling for the party to reverse the decision.

The controversy has cast a shadow over Polanski's campaign, raising questions about the broader implications of the party’s stance on Israel and relations within the Jewish community. Labour’s hold on Holborn and St Pancras appears firm, but the debate surrounding antisemitism and the Greens’ policy positions continues to shape the electoral atmosphere.