Ed Miliband
The younger Miliband will call for the party to rediscover its "radical edge" following its defeat in last week's general election which produced a new coalition government of the Conservatives and the Liberal Democrats.
The BBC said he had told Labour party members in his constituency in Doncaster, northern England, of his intentions on Friday evening.
David Miliband is the frontrunner in the race after announcing his candidacy on Wednesday and has already attracted the support of senior party figures such as former home secretary Alan Johnson.
--------------------------------------------------------------------------
The BBC said he had told Labour party members in his constituency in Doncaster, northern England, of his intentions on Friday evening.
David Miliband is the frontrunner in the race after announcing his candidacy on Wednesday and has already attracted the support of senior party figures such as former home secretary Alan Johnson.
--------------------------------------------------------------------------