Labour has secured another victory in the Holborn and St Pancras by-election. But the real talking point isn’t the winner. It’s the runner-up. The Green Party managed to claim second place, a result that has triggered intense debate about the direction of the party and the future of its leadership under Zack Polanski.
On the surface, finishing second in a high-profile London constituency looks like a massive win for the Greens. It shows they can mobilize voters in urban areas and position themselves as the primary left-wing alternative to Sir Keir Starmer’s Labour. Yet, politics is rarely that simple. Behind the scenes, the result has sparked questions about whether Polanski is steering the party toward long-term success or if they are hitting a ceiling.
What the Results Mean for Zack Polanski
Polanski has been a prominent voice for the Greens, pushing a bold, progressive platform. However, some party insiders and commentators wonder if second-place finishes are enough. Can the Greens actually win these seats in a general election? Or are they destined to remain the perpetual runners-up, picking up protest votes but failing to secure power?
The debate took center stage on a recent episode of the BBC’s Newscast. Host Adam Fleming, along with producers Chris Gray and Gabriel Purcell-Davis, looked closely at the political fallout. They brought in Luke Tryl, a prominent pollster from the research organization More in Common, to make sense of the numbers.

The Pollster’s View
Tryl pointed out that while the second-place finish is respectable, it highlights a strategic dilemma for Polanski. The Greens are doing well in specific urban, highly educated pockets. But expanding that appeal to the wider electorate remains a steep hill to climb. To win parliamentary seats, the party needs more than just protest votes from disgruntled Labour supporters. It needs a broader, more mainstream coalition.
For Polanski, this is a delicate balancing act. He must satisfy the party’s traditional, highly passionate activist base while simultaneously appealing to middle-of-the-road voters who care about the environment but worry about the economic cost of green policies. If he tilts too far in either direction, he risks alienating one side.
A Leadership Crisis or a Golden Opportunity?
Some critics argue that the Greens are missing a historic window of opportunity. With Labour facing tough decisions in government, disgruntled left-wing voters are looking for a new home. If the Greens cannot win seats under these conditions, some ask, when will they?
But supporters of Polanski see the Holborn and St Pancras result as a stepping stone. They argue that building a political movement takes time. Coming second in a Labour stronghold is no small feat. For them, it is proof that the party’s message is resonating and that Polanski’s leadership is keeping the Greens relevant in the national conversation.
Ultimately, the by-election has put Polanski under the microscope. He does not necessarily face an immediate threat to his position, but the pressure is undeniably mounting. The coming months will test his ability to convert high poll numbers and second-place finishes into actual seats in Parliament.