Labour favoured to keep Holborn & St Pancras seat as Greens brace for by‑election test
The contest on 8 October pits Labour’s Sagal Abdi‑Wali against Green leader Zack Polanski, with the outcome set to influence party morale and future council control in London.
News London evidence indexOpen analysis ▾
Trust 74: multiple named sources and a YouGov survey are cited, with dates and locations specified.
Higher is stronger
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Higher is stronger
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Lower is better
Residents of Camden will vote on 8 October to fill the parliamentary seat vacated by former Prime Minister. The contest pits Labour’s Sagal Abdi‑Wali against Green Party leader Zack Polanski. The result will determine whether the seat remains in Labour hands or registers a rare Green breakthrough.
Why the by‑election matters to Camden
Holborn and St Pancras by-election: Greens challenge Labour stronghold
Green Party candidate Zack Polanski faces Labour's Sagal Abdi-Wali in a contest for a seat held by Labour since 1983.
Holborn & St Pancras covers a central part of Camden, including the bustling market area and several university precincts. A change in representation could affect local funding priorities, especially on housing and climate‑related initiatives that both parties have highlighted. Labour’s candidate has been described by party members as the clear front‑runner.
Green Party’s recent performance
The Greens point to their success in the 2024 general election and the May council polls, where they took control of six London borough councils. That achievement is used by the party to argue that momentum is building, even if the current by‑election appears difficult.
Poll: Labour to hold 52 London seats, Greens win none
MRP survey by More in Common suggests Conservatives gain five seats and Reform UK takes one.
The Greens have only just started. It gained momentum when Zack first came in and now the momentum is building.
Diane Gould, Wealden Green Party councillor
Polling snapshot
A YouGov survey released last week indicated that, if a general election were called tomorrow, the Greens would win no seats in the capital. The poll attributes the result to a “Burnham bounce” for Labour, following the recent change in national leadership.
Implications for Green leadership
Party members have said that a loss in Holborn & St Pancras would not automatically end Polanski’s tenure as leader. A Green activist quoted by the Standard argued that the party’s structure distributes responsibility across its membership, reducing the impact of a single by‑election result.
Camden voters will receive campaign literature from both parties in the weeks ahead. Polling stations are located at community centres on Highgate Road, Camden Town, and near the British Library. The council will open doors from 7 am to 10 pm on election day.
After the polls close, the result will be announced by the Electoral Commission within 24 hours. If Labour retains the seat, the party will continue its current policy agenda for the area. A Green win would mark the first time the party holds a Westminster seat in central London and could reshape future council negotiations.
Questions this report answers
+When is the Holborn & St Pancras by‑election taking place?
The by‑election is set for 8 October 2026. Voters in the Camden portion of the constituency will cast ballots on that date, and the result will be announced by the Electoral Commission within the following day.
+Who is expected to win the by‑election?
Labour candidate Sagal Abdi‑Wali is described by party insiders as the favourite. The Green Party’s leader Zack Polanski is also contesting, but internal polling and external surveys place Labour ahead.
+What does the recent YouGov poll say about Green prospects in London?
The YouGov survey suggests the Greens would win zero parliamentary seats in the capital if a general election were called tomorrow. The poll attributes the outlook to a surge in Labour support following the recent change in national leadership.
+How could the by‑election outcome affect Green Party leadership?
Party members have indicated that a defeat would not automatically remove Zack Polanski as leader. The Green Party’s constitution spreads responsibility across its membership, meaning a single loss does not dictate leadership changes.
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