Have your say on government e-petitions

Change the law to trigger a by-election when an MP defects to another party.

Submitted on Monday 6th April 2026

Rejected on Friday 1st May 2026

Current status: Rejected

Rejection code: duplicate (see below for details)

Petition Action

Change the law to trigger a by-election when an MP defects to another party.

Petition Details

Current UK electoral process allows an MP to switch parties once elected, betraying the confidence voters put in them.

Additional Information

To stop injustice of political party (A) being allowed to increase influence by poaching constituencies won by party (B). In such cases voters are left feeling deceived, and their voices, muted. The change in law would help improve voter confidence, and encourage increased voter turnout out, which has been getting progressively worse. 2019 average turnout all regions (England, Wales, NI) 66.7% turnout. 2024 59.1%
( % data House of Commons Library)


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This petition was rejected

The Government e-Petitions Team gave the following reason:

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 this petition which calls for a similar action:
Require a by-election if MPs / Councillors change parties or become independent
petition.parliament.uk/petitions/757091

Have your say on this petition!

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