This petition was submitted during the 2017–2019 Conservative government

Rejected petition A by-election must occur when an MP changes party allegiance during a Parliament

Members of Parliament must test the continued democratic mandate from their constituency when switching party allegiance. Not to do so disenfranchises the majority of voters who elected them until the end of the fixed term Parliament period, to the detriment of democratic representation.

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.

https://petition.parliament.uk/petitions/269912

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