The best thing about the Donald Trump presidential candidacy is that all the other GOP candidates -- for lack of a better word, let's call them "serious" or "realistic" -- I say, all the other GOP candidates are actually responding to him, in public. Seen on CNN, just this morning:
Every action they're taking to delegitimatize Trump only increases how seriously the media is taking him. "Amateur hour" is one term for it. The GOP clown car could not be more literally full of clowns, though at least one outlet is being realistic about the situation.