Sir Keir has been the MP for Holborn and St Pancras since 2015 and was elected Prime Minister in 2024.
Sir Keir Starmer will step down as an MP (Gareth Fuller/PA)
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He added: “It has been an enormous honour and privilege to symbolize the most effective constituency within the nation and to have taken over from Frank Dobson, who was such a fantastic constituency MP and a member of the final Labour authorities.”
The seat of Holborn and St Pancras was created in 1983, and has solely ever been held by Labour.
When will the by-election be to switch Sir Keir Starmer?
A date for the Holborn and St Pancras by-election is but to be confirmed, however it’s set to be held in 2026.
The method of triggering the by-election will start with the Chief Whip of the Labour social gathering, who will “transfer the writ”.
This entails shifting a movement within the Home of Commons chamber asking MPs to conform to situation a brand new election to switch the outgoing MP.
Andy Burnham paid tribute to Sir Keir Starmer within the Home of Commons on Tuesday
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The Speaker then places the query to MPs to determine whether or not to conform to the movement – if handed, this turns into an Order for the Speaker, who in flip points a Warrant to the Clerk of the Crown who then sends the writ to the Returning Officer.
The by-election needs to be held between 21 and 27 working days from the issuing of the writ.
Sir Keir will then go away the Home of Commons, as soon as a brand new MP has been elected to switch him.
Candidates to face for Labour within the by-election have till Friday to use.
Setting out the timetable for the candidate choice, the Labour Occasion stated on its web site that purposes opened on Tuesday, and can shut at midday on September 4.
Due diligence checks and interviews to whittle down the candidate checklist will then happen, earlier than the candidate is picked after hustings and a variety assembly on September 9.