Police have vowed to look into evidence of illegal family voting at the local elections after it was exposed by the Daily Mail.
West Midlands Police said it would work with the Electoral Commission watchdog and Birmingham City Council, England's biggest town hall, to review the dossier of claims by polling station staff about widespread attempts to influence voters.
A spokesman for the force told this newspaper: 'We will be assessing new information that has come to light and will work with Birmingham City Council and the Electoral Commission as part of the review process.'
It took action after the Mail revealed that attempts to breach the secret ballot had been witnessed at 50 different polling stations in Birmingham.
The local authority compiled reports from presiding officers showing that they repeatedly had to tell voters it is against the law to enter a booth with someone else or tell them which candidate to pick.
One man was said to be 'trying continuously' to 'influence voters' while another was accused of trying to 'influence voting' through 'Islamic gestures, blinking eyes, hand signals'.
Voters also 'became aggressive' and were 'rude' when told not to talk to each other in polling booths.
Conservative peer Lord Hayward, who introduced the 2023 law that makes it a criminal offence to attempt to influence voting in polling booths, said other authorities should also investigate behaviour at recent elections.
Birmingham City Council is at the centre of claims of illegal family voting at the May elections
He said: 'We need to ensure that voting is in secret and local councils should have looked at presiding officers' reports from polling stations already and know what level of problem they faced in May.
'Although it is right that the police should investigate extreme cases or where polling station officials were intimidated, the responsibility falls heavily with the local councils and the Electoral Commission.
'Manchester in particular should identify reports from their polling stations in May. If Birmingham faced this level of problem so did many other areas almost certainly including at the recent Gorton & Denton by-election.'
The Electoral Commission said: 'We will be providing support if requested but as the police are currently reviewing this matter, we cannot comment further at this stage.'