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The Labour Party's Lisa Forbes won the by-election by 683 votes ahead of the Brexit Party candidate’s Mike Greene on June 6. But a new report released by election observation group Democracy Volunteers said multiple voters were seen heading into the same polling booth together at 11 of the 23 polling stations it had observed. While the report found polling station staff were quick to act, it will raise more concerns after the Brexit Party alleged illegal activity through postal votes.

The party has since filed a petition with the High Court to call for an investigation into the by-election.



Dr John Ault, executive director of Democracy Volunteers, said: “Family voting is when we see two voters in a polling booth together which allows for collusion, discussion or oversight of how the other person votes.



“In Peterborough we saw it at a lot of polling stations across communities.



“Peterborough has quite a lot of arrangements to deal with it. Staff were prepared to intervene. Peterborough was clearly active in dealing with it.