Trump says US voter fraud is 'rampant' - evidence suggests it is extremely rare

President Donald Trump has offered a $1m (£750,000) reward to people who report cases of voter fraud in the US which lead to a conviction.
Ahead of the midterm elections on 3 November, Trump has been casting doubt on the security of the vote - alleging "rampant" cheating in postal voting and non-citizens voting.
BBC Verify has taken a look at the evidence and Trump's proposed changes to the voting system.
Opens BBC News in a new tab