Rejected petition If an MP defects to another party, a by-election should be called immediately.

A new law should be introduced to ensure constituents, voting for a candidate who represents their chosen party defects, there should be a by-election to confirm the constituency still want representation from this individual.

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Very often constituents vote according to party preferences and may indeed vote tactically to ensure certain parties do not win a seat. It is therefore incongruent for an MP to decide to change allegiance without support from her / his constituents. A by-election should be called immediately.

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.

You are more likely to get action on this issue if you sign and share a single petition.

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 15 September 2025
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