Britons are about to vote in an election that was supposed to be dominated by Brexit but, after two deadly attacks in as many weeks, has become a battle over security.

After attacks in Manchester and London that killed 29 people, voters are anxiously aware of the threat the country faces from international terrorism, and demanding to know why authorities failed to apprehend suspects whose extremist leanings were well-known.

The attacks have raised awkward questions about May's own record in government.

The London Bridge attack is the third in Britain this year, following a vehicle-and-knife rampage near Parliament in March, which killed five, and the May 22 bombing at an Ariana Grande concert in Manchester in which 22 people died.

Even before the attacks, the polls were narrowing.

In the final days of the campaign, May's Conservatives have increased their attacks on Corbyn's security record.

As Labour's hopes of winning the election – or at least denying May a big majority – rise, Corbyn has tried to dispel his image as a peacenik.

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