Danny DeVito backs Jeremy Corbyn for Prime Minister

The party is being hosted by the Grand Marshal Corbyn's Patriotic Meme Collective, a pro-Labour campaign group.

The party has climbed from 26 to 34 points, while the Conservatives hold steady on 49 per cent.

Mr McDonnell also told the BBC it was not true that Mr Corbyn was unpopular with the electorate, given how popular his policies were.

A Press Association analysis of posts from the main official accounts between May 9 and May 16 suggests social media users are now responding more positively to Labour - with posts on the Labour Party and Jeremy Corbyn pages on Twitter and Facebook averaging more shares and positive reactions across both platforms than any other party.

"And in the eventuality we do lose - although I am very certain we will win - I could always change the name to "Jeremy Corbyn Moral Victory Party".

The Grime 4 Corbyn campaign follows a number of high-profile endorsements for the Labour leader from grime artists, which so far include Akala and JME, who have publicly supported him since the election was called.

The manifesto also confirms that were Jeremy Corbyn to prove victorious in June, Labour would legislate to ban letting agency fees charged to tenants.

Mr Corbyn was quoted as saying earlier in the campaign that he would stay on whatever the result of the election, citing the mandate he has from his leadership victories in 2015 and 2016.

"We know the alternative is the Tories able to do what exactly they want, so it's up to us to stand up for Wales", he said.

"It's never a bad day to have a "Tories Out" protest".

"Our country will only work for the many not the few if opportunity is in the hands of the many".

Mr Gething said he recognised public concern about immigration, but insisted that most migration was "economically beneficial". People like me are always optimistic. things can happen.

"There's a challenge for us about understanding what sort of deal we can have with Europe that doesn't compromise Welsh jobs and investment", he said.

Welsh Conservative leader Andrew RT Davies responded: "A vote for Labour is a vote for more debt, more taxation and a chaotic Brexit, no matter how cynically Welsh Labour ministers attempt to carve out a distinct brand for themselves".

  • Leroy Wright