Top UK Bookmaker William Hill has Jeremy Corbyn as favourite to win the Labour leadership race, they have Mr Corbyn 11/8 favourite, ahead of Mr Burnham on 6/4, Ms Cooper on 5/2 and Liz Kendall on 50/1.
William Hill Bookies spokesman, Mr Rupert Adams said: “Jeremy Corbyn is the favourite and this gamble has resulted in the biggest price fall in political betting history.”
The UK bookmaker said: “Some people may still be refusing to take Stormin’ Corbyn seriously but the punters and the pollsters certainly are.”
Jeremy Corbyn’s Labour leadership race received a mega boost after he gained the backing of UNISON, Britain’s second-biggest trade union.
The general secretary of UNISON, Dave Prentis, said Mr Corbyn’s message had “resonated with public sector workers” and that “their choice shows a clear need for change towards a fairer society”.
UNISON was expected by most people to back Labour’s Yvette Cooper, instead they named her as its second choice candidate. The decision was made by a 23-strong National Labour Link Committee, “following a thorough consultation with all the regions”, it said.
Over 28,000 Unison members are also members Labour party whilst a further 15,000 have signed up as supporters to be eligible to vote in the leadership contest.