Labour Party leadership candidates (L-R) Liz Kendall, Jeremy Corbyn, Andy Burnham and Yvette Cooper at the end of a leadership debate hosted by The Guardian newspaper in central London, Britain August 27, 2015. Britain's opposition Labour Party is voting for a new leader in a contest that polls indicate will be won by Jeremy Corbyn, a veteran fan of Karl Marx who has upstaged rivals by promising a radical shift back to the party's socialist roots. REUTERS/Peter Nicholls