The McDonnell withdrawal, plus some tactical nominating by the likes of Harriet Harman and David Miliband, means that the other five candidates are all now on the ballot paper for the Labour leadership race. When the Tories had their leadership election after the 2005 election, one way to think about who would be their best candidate was to think who would Labour least want. Given his showing at conference, Cameron was the clear winner of that test, and for once the Tories elected the strongest candidate (Hague and Iain Duncan Smith shows this wasn’t always their tactic). Who would the Tories and Lib Dems be most worried by from the five Labour candidates? My bet would be Ed Miliband.