Early in his prime ministership, approval numbers rocketing, he would have imagined himself breaking the mould, a new type of leader. But like most political leaders, over time Turnbull has, wisely if not admirably, accepted the narrowness of his immediate task. His job is not to outdo great leaders of yesteryear. His job is to beat Bill Shorten. If that involves making political hay out of immigration, Turnbull is prepared to do it.