Rejected petition If an MP swaps political party mid-term, a by-election is mandatory in 25 days.

Force an MP who changes political party, (to a different political party), mid-term to resign. Making a by-election in that MP's constituency mandatory.

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Democracy and Constituents deserve the right to reaffirm their faith (or otherwise) in their MP, especially after the MP makes such a dramatic change in their personal beliefs.

This petition was rejected

Why was this petition rejected?

There’s already a petition about this issue. We cannot accept a new petition when we already have one about a very similar issue.

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You may wish to sign the following petition, which calls for similar action:

By-elections to be called automatically when MPs defect to another party
https://petition.parliament.uk/petitions/737660

We only reject petitions that don’t meet the petition standards.

Date submitted 23 January 2026
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