Donald Trump didn’t become the favorite for the Republican presidential nominee without having political talent—not least his ability to unleash a torrent of verbiage that ducks a question. If he loses in the end, the guy should start up Trump Political School.

Consider the businessman’s response Sunday to a question about when he would release his tax returns, as he has already promised to do. George Stephanopoulos of ABC’s “This Week” quoted our Saturday editorial calling on Mr. Trump to release his returns “so Republicans can know what they’re voting for.”

Mr. Stephanopoulos: “Will you release them by Super Tuesday? Don’t Republican voters have a right to know?”

Mr. Trump erupted in that now-familiar and calculated way in which he pretends he is the victim of a great injustice:

“Well, first, no, I won’t. No, no, no, I won’t. I’m working on it. We’re working on, they’re massive. You saw pictures of me. But let me tell you about The Wall Street Journal. I have no respect whatsoever for The Wall Street Journal. I don’t think they know what they’re doing.