London — Labour Win in North London Raises Doubts About Polanski

Labour's win in a north London contest this week is being read in Westminster as a setback for Green Party leader Zack Polanski, according to an Oct. 9 analysis published by The Economist. The magazine's piece, headlined "Zack Polanski's star is fading," argues that a Labour victory in the capital undercuts the political momentum Polanski has tried to build since taking over the Green Party of England and Wales.

What did Labour win in north London?

The Economist's report centers on a Labour win in north London, which the magazine calls "terrible news" for Polanski and the party he leads. The piece does not name the specific ward or constituency or detail the size of Labour's margin, but it treats the result as evidence that Labour can still beat the Greens on the kind of urban, left-leaning ground the Greens have targeted for growth. For a party whose national strategy depends on winning exactly these kinds of seats, a loss on friendly turf carries outsized weight, the magazine suggests.

Who is Zack Polanski?

Polanski took over as leader of the Green Party of England and Wales in 2025, campaigning to push the party toward a sharper, left-of-Labour message on economic inequality, housing costs and climate policy. He replaced the party's earlier leadership arrangement and has since tried to present the Greens as the natural home for voters who think Labour under Keir Starmer has governed too close to the political center. That bet depends on the Greens being able to prove, seat by seat, that they can actually beat Labour where left-leaning voters have a choice.

Why does one local race matter for a national party leader?

Local election and byelection results are the main evidence smaller British parties use to argue they are rising. The Green Party has pointed in recent years to local council wins as proof it can turn protest votes into actual seats. A Labour win in a part of London where the Greens hoped to make gains complicates that argument, according to The Economist's analysis, because it suggests Labour has not lost its grip on left-leaning voters even in places of presumed Green strength.

"A Labour victory in north London is terrible news for the Greens' leader." — The Economist, Oct. 9, 2026

What does this mean for the Green Party's strategy?

Polanski's pitch to Green members and sympathetic voters rests on the idea that Labour has left room open on its left flank. The Economist's framing challenges that premise directly: if Labour can hold ground in London boroughs where the Greens have campaigned hardest, the case that Polanski's leadership has shifted the party's trajectory upward gets harder to make. The magazine treats the north London result less as an isolated loss and more as a data point against the broader story Polanski has told since becoming leader — that the Greens are the rising alternative to a Labour government moving toward the center.

That narrative matters beyond one council seat. Party leaders in Britain's smaller parties rely on a steady drumbeat of local wins to keep members, donors and the press convinced their project is working. A single high-profile loss in the capital, especially one covered nationally, can do outsized damage to that narrative even if it changes little in terms of actual seats held.

What happens next for the Green Party?

The Economist's analysis does not report what Polanski or Green Party officials plan to do in response to the north London result. London's next full round of local elections, and the next general election, will be the tests that determine whether the Greens' urban strategy — and Polanski's leadership of it — can convert sympathetic sentiment into parliamentary seats. For now, the reading of the north London result in Westminster is built largely on The Economist's own characterization: that a single Labour win in the capital has left Polanski's standing weaker than it looked a few months earlier.

Glossary

• Green Party of England and Wales: the national Green party contesting elections in England and Wales; Scotland and Northern Ireland have separate Green parties.
• Byelection: a special election held to fill a political seat that becomes vacant between scheduled elections.
• Labour Party: Britain's governing center-left party, led nationally by Keir Starmer, referenced throughout The Economist's analysis as the main rival the Greens are trying to out-flank on the left.