Editorial : These are the real issues the pretenders to 10 Downing Street ought to be talking about Sign up for our free Voices newsletter for expert opinion and columns Sign up for our free weekly Voices newsletter for expert opinion and columns Sign up to our free weekly Voices newsletter Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice W hat is so remarkable about the crisis of leadership convulsing the Labour