The 66-year-old, who strongly opposes the government's austerity policies and Britain's membership of NATO, was considered an outsider but in recent months became the runaway favourite over three more mainstream rivals to win Saturday.
Cheers and applause erupted in the London conference venue as it was announced that Corbyn won almost 60 percent of the vote, far ahead of his closest rival, Andy Burnham, who scored 19 percent. Some 422,664 votes were cast.
