Can anyone stop Jeremy Corbyn?

Mr Corbyn is now the favourite to win from Yvette Cooper and Andy Burnham, with Ms Kendall consistently coming in fourth place in polls.

Jeremy Corbyn and Andy Burnham are putting on a united front as the Labour leadership election heats up.

Ms Cooper was introduced to Labour supporters by Susan Elan Jones, MP for Clywd South, who said she would be “the party’s first female leader and the next Labour Prime Minister” to rapturous applause in Lache Community Centre where there was standing room only.

However, he said he rejected comparisons that were being made between Mr Corbyn and Michael Foot, the former British Labour leader who saw the party lose to Margaret Thatcher’s Conservatives by a landslide in 1983.

A spokesman said: “Gordon Brown has highlighted the need for a Labour Party that stands for hope, that is credible, radical and electable – on which basis the best candidate to vote for is Jeremy Corbyn“.

“The Labour Party needs to choose someone with exciting ideas for the future, who can articulate them passionately, link them to people’s lives and lead us to win the next general election”, she said.

And to cheers and applause from party members, he added: “If we had listened to our councillors through our term in government we would have done a simple thing – built more council houses”. “I’ve received some vicious antisemitic abuse and I’m expecting the Labour Party to take action against this”.

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The former party leader said the resurgence of the left was “understandable” against a backdrop of “poverty and insecurity” across the country.

But in a clear indication that he was concerned about a victory for Corbyn, he singled out some of the potential foreign allies for whom the would-be leader has expressed sympathy.

It came as Mr Burnham jumped to Mr Crobyn’s defence by saying criticism of the Islington North MP had been “overstated” and attacked grandees for “circling the wagons against Jeremy’s campaign”.

John Mann, chairman of the All-Party Parliamentary Group Against Antisemitism, said he had received more than 40 abusive emails and tweets in the past six weeks.

Corbyn said: “We welcome Andy’s inclusive tone towards our campaign and the view is mutual – if we win we would involve Andy in our team if he was willing”. Jeremy wants Labour to become a democratic social movement again, dedicated to real change.

Ballot papers were sent out to members and suppporters on Friday, and the results will be announced in early September.

Asked about the other candidates, he said: “I’m not sure everyone else is totally on that page as yet but I’m sure they will be in time”.

Brown is the latest high-profile Labour figure to warn the party faithful against voting for the frontrunner, but without openly supporting any of the other three candidates or spelling out Corbyn’s name.

She said: “I think the areas where Labour did well were often cities and areas with universities and those were the areas where we increased our votes”.