Donald Trump led the field with support from a whopping 24% of Republican respondents to a Washington Post/ABC News poll conducted late last week, beating Scott Walker by 11 points. I bet you didn’t think you’d be pulling for Scott Walker in 2015, did you? But the Post seems to have buried the lead in its story on the poll: although Trump polled very well Thursday and Friday, his support plummeted Saturday night, after the media widely reported his remarks about John McCain. It seems Trump has defined some contours of the contemporary Republican Party. You can call Mexicans rapists, but you cannot attack a veteran.