Labour leadership candidate Owen Smith has said he will push to give Britain a second referendum after a Brexit deal is struck.
Smith said many Leave voters now regret their decision and were "clearly misled" by the Brexit campaign.
The former work and pensions secretary said Labour should be committed to a second referendum - or at least a general election - once the nature of Brexit is finalised.
"I think there are many people out there who voted in good faith for Brexit and who felt they were doing the right thing for their families and their communities and I respect them for taking that decision," he told the Guardian.
“And then we should give them another chance. That does mean a second referendum or a general election when the terms are clear. The Labour government should be committing to that.”
Smith joined the race to challenge Jeremy Corbyn on Wednesday, and said either he or fellow challenger Angela Eagle should step aside - to give a unity candidate a free run at challenging the leader.
He said: "Ideally, we would have one candidate, and the clarity of that one candidate versus Jeremy Corbyn."
Eagle, however, indicated that she would be willing to challenge both Owen Smith and Jeremy Corbyn in a three-way battle for the top post.
"I will leave Owen to do this own thing, I'll do my own thing", she told supporters at an event in London on Wednesday evening.