Voting opens in Holborn and St Pancras by-election as 15 candidates race to replace Sir Keir Starmer

Polling stations across the north London constituency of Holborn and St Pancras have opened their doors, marking the start of a by-election that will decide who succeeds Sir Keir Starmer as the area's MP. Roughly 30 voting venues, many of them set up inside local churches and community centres, began accepting voters at 07:00 BST. They will remain open until 22:00, at which point ballot boxes will be sealed and the count to determine the seat's next occupant will get under way.

The contest has drawn a crowded field, with 15 candidates standing across the political spectrum. Among them is a single independent hopeful, standing outside the structure of any established party. The breadth of the ballot underlines the significance of the constituency, which has found itself at the centre of national attention following the unexpected departure of a prime minister from the Commons.

The vacancy arose because Sir Keir announced that he was stepping down as an MP in order to concentrate on a role in international affairs. His decision, first disclosed at the start of September, brought an abrupt end to his representation of the constituency and forced the organisation of a fresh election to fill the seat. In the weeks since that announcement, attention has shifted from the reasons behind his exit to the question of who will take over.

For voters, the process of taking part has one notable requirement: photographic identification. Anyone wishing to cast a ballot must present an acceptable form of ID, with a driving licence or a passport among the documents recognised by the authorities. The rule, now a standard feature of UK elections, means that anyone arriving at a polling station without suitable documentation could be turned away, a point that campaigning groups and the Electoral Commission have repeatedly highlighted in the run-up to polling day.

Election officials have spent recent weeks preparing the logistics of the vote, from recruiting and training staff to marshalling the network of polling places that will serve the constituency. That the venues include churches and community centres reflects the traditional reliance on familiar civic buildings to host the democratic process, giving voters in the area a maximum of roughly 30 locations from which to choose.

The timetable for the day is tightly drawn. With stations closing at 22:00, the count is expected to begin immediately afterwards, meaning a result could emerge in the early hours. Officials will first sort and check ballots, then proceed to the tally, before declaring the winner publicly. Turnout figures will be scrutinised closely as an indicator of how much enthusiasm there is among local residents for an election that few would have anticipated when Sir Keir was first returned to Parliament.

Candidates standing in the by-election have been setting out their pitches to voters over the past fortnight, with the full list of those contesting the seat published in late September. The campaign has given residents a chance to weigh up not only party messages but also the credentials of the independent candidate, who must compete for attention without the backing of a national machine.

By-elections have long been treated in British politics as a barometer of public mood, offering a snapshot of how the electorate views the government of the day between general elections. A contest in a constituency as high-profile as this one is likely to be read far beyond the borders of north London, with party strategists poring over every shift in the vote share when the numbers are finally announced.

The circumstances of this particular contest make that scrutiny even sharper. The seat fell vacant not through a defeat or a scandal, but through a deliberate decision by a sitting prime minister to leave frontline domestic politics in favour of work on the world stage. That framing has shaped the campaign, with the international dimension of Sir Keir's departure forming part of the backdrop against which voters are making their choices.

Practical advice for those still to vote has come from the Electoral Commission, the independent body that oversees elections in the UK. Its guidance emphasises the identification requirement and directs voters to check beforehand which documents are accepted, in order to avoid disappointment at the polling station door.

As the day progresses, attention will also turn to how the parties and the independent candidate mobilise their supporters, with transport to polling stations and reminders about ID among the key organisational tasks. Local activists will be keen to demonstrate their ground-game strength, particularly in a contest where every vote can carry outsized weight.

When polls close and the boxes are brought in, the arithmetic of the count will reveal whether the electorate has rewarded continuity or signalled a desire for change. Whatever the outcome, one thing is certain: Holborn and St Pancras will have a new voice speaking for it in the House of Commons, and the identity of that voice will be known before the night is out.