Obama banking on victory in Mississippi

Barack Obama, locked in a tight and contentious race with Hillary Clinton, is tipped to win today’s primary in Mississippi as the two Democrats battled for every last delegate in their historic contest for the party’s presidential nomination.

Mr Obama defeated Mrs Clinton in a minor contest in Wyoming on Saturday and retains the all-important overall delegate lead. But he was hit by losses to the former first lady in three out of four primaries last week.