What does the leadership battle within Britain's Labour Party tell us about socialist politics here and elsewhere in the world? The polls suggest the veteran MP Jeremy Corbyn is set to become the new Labour leader. His left-wing policies include increased public spending and state ownership of major industries. After a huge defeat for Labour in May's general election, wouldn't Labour and other similar parties in Europe be more popular with voters by holding to the centre ground? Zeinab Badawi talks to different wings of the Labour Party: former London mayor Ken Livingstone and Charles Clarke, who served as a Labour cabinet minister under Tony Blair.