Perhaps Donald Trump is rewriting the rules of US politics. But let's not forget that's been said before and frontrunners often fade when the voting starts
Today, at last, we will finally start to see past the blarney and balderdash, the polls and projections, to see the outline of the US presidential race. The Iowa caucuses are being held and the voice of actual voters will get to drown out the voices of the candidates and commentators. For a while at least.