GETTY Jeremy Corbyn’s biggest union backer has given money to moderate MPs

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Unite’s Len McCluskey is attempting to make inroads after “backing the wrong horse” it has been claimed. Mr McClusky has been one of Corbyn’s most vocal supporters, and has put the weight of the largest trade union in the UK behind him.

But cracks began to show in his support when he suggested in March that Corbyn be given just 15 months to prove himself, and that he should stand down if he fails. Now, insiders say he is “hedging his bets” by looking at other options for Labour’s future.

GETTY Len McClusky’s decision has lead to claims he has turned his back on the Labour leader

A well-placed source in the Labour Party said: “He seems to be trying to make friends with moderates in the party again. None of us think he will stand by and let Corbyn stay at the helm if the party is annihilated at the polls.

Finally he has admitted that he backed the wrong horse Labour source

“He clearly wants to build inroads with those who will be left to rebuild the party after the election. “Finally he has admitted that he backed the wrong horse.” Corbyn has acknowledged that Labour faces “a challenge on a historic scale” to win the June 8 General Election after last week’s local poll disaster.

GETTY It has been claimed the union boss is attempting to ‘make in roads’ after ‘backing the wrong horse’

Snap election 2017: The pictures politicians may not want you to see Sat, May 27, 2017 Protests, fights and daleks, it all happened when the politicians hit the campaign trail for the snap election Play slideshow Getty Images 1 of 48 A UK Independence Party supporter (L) scuffles with a pro-europe supporter ahead of a visit by UKIP leader Paul Nuttall to Hartlepool

Despite this, he has refused to consider resigning, saying: “Of course I’m disappointed in the results on Thursday, but we’re out there giving the message of how the economy and our society could be very, very different.” He went on to challenge the Prime Minister to a live debate, adding: “I have a message for Theresa May: If you feel the need to go on about what a great leader you are, then show it by debating with me in this election campaign.”