What direction will Joe Biden set as president? The image that clings to him is that of a moderate. Having first entered politics 48 years ago, he seems to be an old-school Democrat in a party rapidly moving leftwards, and a veteran of what used to be the America’s most bipartisan institution – the Senate. Indeed, throughout his primary and presidential campaigns he presented himself as a bipartisan unifier and, as a result, was often derided as a sell-out by many on the left of his own party.