Ed Miliband: James Naughtie profiles Labour leader

Ed Miliband's personal poll ratings have been poor and he has failed to build up any lead for his party, despite the difficulty for any government operating in an age of austerity.

But while the doubters think he will wilt under pressure, his supporters say he is more determined than his critics allow, and will be lifted by the campaign to allow his passions to show.

James Naughtie profiles the Labour leader.