Voters could be turned away from polling stations for the first time at the local elections in May after the government made proof of ID a requirement last year.
The government says the changes are necessary to counter fraud, but it has faced accusations of voter suppression from critics and was forced to dismiss warnings that there is not enough time to implement the bill.
What is voter ID?
In previous elections, most voters in the UK were not required to provide any form of identification at polling stations in order to be able to vote in elections. If you wanted to vote on election day, all you had to do was arrive at your local polling station and provide your name and address before being given a ballot paper.
