Sadiq Khan admits he is yet to decide who to back in the Labour leadership contest, however says his decision will hinge on how candidates address two issues: the reason behind Labour's defeat in the general election, and the route back to the party's success. <br /> <br />The London Mayor adds he is "fed up" of Labour losing at general elections, while letting down the party's membership and Report by Alibhaiz. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn
