I sense that a major shift happened over the last three or four days culminating in last night's debate, though it is all but unnoticed. It is not only clear that Donald Trump is now the odds on favorite to be the Republican nominee - GOP party regulars are increasingly comfortable or resigned to the prospect. They seem more worried about the prospect of Ted Cruz as the party nominee. Cruz isn't now the highly imperfect Stop Trump candidate. Trump is taking the role of the Stop Cruz candidate.