That he'd be the first Prime Minister since 1979 not to be in Murdoch's pocket, having called him out & won (just google it if you need to - 'BSkyB merger - phone hacking' should do it). But you probably knew that didn't you?
Interesting view in the Spectator of all places...
http://www.spectator.co.uk/features/9438172/ed-milibands-biggest-critics-dont-hate-him-for-how-hes-failed-they-hate-him-for-how-hes-succeeded/