Tony Blair has said that he feels so "passionate" about blocking a hard Brexit that he is considering a return to front-line politics.
The former Prime Minister said that Theresa May is on course for a landslide majority and suggested that Jeremy Corbyn stands no chance of becoming Prime Minister.
He said that he wants to add a "new dimension" to the election by encouraging voters to support candidates who do not back a hard Brexit, even if they are Liberal Democrat or Tory.
He said: "I feel so passionate about this. I feel for the first time since I first came into politics I look at the British political scene at the moment and I almost feel motivated to go right back into it."
He said that Mrs May is on course for a "steamroller" election victory.
He told BBC Radio 4's The World This Weekend: "The central question of this election is less to do with who is Prime Minister and more to do with what is the nature of the mandate.
"In particular, because otherwise frankly this is a steamroller election, is it possible we can return as many members of Parliament as possible that are going to keep an open mind on this Brexit negotiation until they see the final terms.
"What this election needs is a new dimension where we put would be candidates and MPs under pressure to say are you going to back Brexit at any cost? This is something that is bigger than party allegiance in this particular election. "
"I will work with anyone - Conservatives of Liberal Democrats - to get this argument across. The Lib Dem position on Brexit is a position many in the Labour Party would support."
Asked if that could mean voting Liberal Democrat, he replied: "What I'm advocating may mean that, it may mean Labour, it may mean people vote Tory. In every constituency if you care about this issue we are going to provide a sufficient amount of pressure that candidates are forced to say where they stand on this issue.
"I feel we are just allowing ourselves to be hijacked by what is actually a small group of people. Theresa May is very, solid, she's a decent person. I agree with a lot of what she says. But on this issue she is not reasonable. [Do you fancy going back into politics?] I've been over 30 years in politics. I've never known polls like this."