Any celebration by Mr. Trump’s opponents seems more than a bit premature. He is unlikely to go anywhere soon. Because what, really, has he suffered, besides a drop in the polls that might prove fleeting? In the month just ended, he very nearly matched the money raised by Hillary Clinton’s big-donor juggernaut, most of it in small contributions. Donald Trump seemed to do everything wrong this week. But what if, to his supporters, he’s done everything right?Adding to an already impressive list of blunders and outrages, Mr. Trump doubled down on his insults of the Muslim parents of a fallen American serviceman; refused to endorse the re-election bid of Paul Ryan, the highest-ranking elected official in his party; and booted a crying baby out of a rally in Virginia.