Holborn and St Pancras By-Election

Q: When is the Holborn and St Pancras by-election?

A polling day has not yet been set. Sir Keir Starmer left the seat on 2 September 2026 by taking the Chiltern Hundreds, and the by-election follows once the writ is moved. This page will be updated when a date is confirmed.

Q: Why is there a by-election in Holborn and St Pancras?

Sir Keir Starmer, the former Prime Minister and Labour leader, has stood down as MP for Holborn and St Pancras, formally leaving the seat on 2 September 2026 by being appointed Steward and Bailiff of the Three Hundreds of Chiltern. An MP leaving the Commons triggers a parliamentary by-election in their seat.

Q: What happened at the last election in Holborn and St Pancras?

At the 2024 general election Labour's Keir Starmer won with 48.9% of the vote and a majority of 11,572 votes (30 percentage points) over a left-wing independent, who took 18.9%. The Greens were third on 10.4%. Turnout was 54.1%.

Q: Are there any polls for the Holborn and St Pancras by-election?

No by-election polling has been published yet. This page will add any constituency polls as they appear.

Q: What does the PollCheck model project for Holborn and St Pancras?

On a general-election basis the PollCheck demographic model currently has Labour first and the Greens second in the seat, on shares of about 40.8% and 15.7%. This is a projection for a general election, not a forecast of the by-election.

Candidates

Labour candidate selection timeline

Stage	Date (2026)

Result

Winner

-

Majority

-

Turnout

-

- votes

Declared

-

Change column: vote share versus the 2024 general election, in percentage points.

Full result: all candidates

Candidate	Party	Votes	Share

Declared result. Shares are of total valid votes and computed from the per-candidate counts.

PollCheck nowcast

Lead

-

Win probability

-

As of

-

Why this by-election

News timeline

The 2026 Camden local elections

Ward by-elections since May 2026

PollCheck's current projection

Change column: projected share versus the 2024 general election result, in percentage points. The 2024 Others figure here includes the second-placed independent.

Scenario Explorer

Published constituency polls

2024 General Election

Winner -Majority - Turnout -Electorate -

Deeper analysis

Background

Frequently asked

When is the Holborn and St Pancras by-election?

No polling day has been set. Sir Keir Starmer left the seat on 2 September 2026, and a by-election follows once the writ is moved. This page updates when a date is confirmed.

Why is there a by-election in Holborn and St Pancras?

Sir Keir Starmer, the former Prime Minister, has stood down as MP, formally leaving the seat on 2 September 2026 by taking the Chiltern Hundreds. An MP leaving the Commons triggers a by-election in their seat.

Who are the candidates in the Holborn and St Pancras by-election?

Restore Britain have confirmed they are standing. No other candidates are confirmed; nominations open once the writ is moved. Zack Polanski, the Green leader, has been floated but is unconfirmed. A left-wing independent finished second here in 2024; whether a similar candidate stands again is not known.

What happened at the last election in Holborn and St Pancras?

In 2024 Labour's Keir Starmer won with 48.9% and a majority of 11,572 (30 points) over a left-wing independent, who took 18.9%. The Greens were third on 10.4%. Turnout was 54.1%.

What do the 2026 Camden local elections show for this seat?

In the May 2026 Camden locals, across the seat's wards, Labour took 38.8% to the Greens' 28.8%, with the Conservatives on 10.0%, Reform UK 8.5% and the Liberal Democrats 6.9%.

Are there any polls for the Holborn and St Pancras by-election?

No by-election polling has been published yet. Any constituency polls will be added here.

What does the PollCheck model project for Holborn and St Pancras?

On a general-election basis the model has Labour first and the Greens second, 40.8% to 15.7%. It is a projection, not a by-election forecast.