U.S. Sen. Elizabeth Warren called Donald Trump a “blowhard” yesterday over his remarks about Sen. John McCain’s Vietnam POW days, but the flare-up hasn’t slowed the media mogul’s meteoric rise in the polls.

Trump is well ahead of the crowded GOP pack with 24 percent support of those surveyed in the latest Washington Post/ABC News poll. Wisconsin Gov. Scott Walker comes in second in the poll with 13 percent.

The surge comes as McCain called on his fellow Republican to apologize to veterans for his remarks.

This weekend Trump knocked McCain’s reputation as a war hero, saying, “I like people who weren’t captured.”

Warren was quick to come to the defense of the Arizona Republican.

“Donald Trump is Donald Trump,” Warren said. “Donald Trump calling John McCain anything other than a hero is just Donald Trump being a blowhard.”

McCain was shot down and taken prisoner during the Vietnam War and spent five years at the infamous “Hanoi Hilton,” where he was repeatedly beaten and tortured.

A fired-up Warren went on to criticize the GOP field for coming to the defense of McCain — long-venerated and the GOP nominee in 2008 — while staying largely silent after Trump’s comments on immigration last month.

“I noticed the other Republican presidential candidates immediately jumped on him for (saying McCain is not a hero), and good for them. But where were they when Donald Trump shot off his mouth about Mexican-Americans?” she said. “The answer is, they hid in the shadows. It’s easy to stand up and defend John McCain as a war hero, because he is. But where are the rest of the Republican leadership in trying to shut down Donald Trump when he goes on the attack against Mexican-Americans?”

Last month, Trump said Mexico was not “sending its best” when people came across the border to the United States.

“They are bringing drugs. They’re bringing crime. They’re rapists. And some, I assume, are good people,” he said.

McCain said he is fair game for criticism.

“I am not a hero. … I’m in the arena,” McCain said on MSNBC.

On a contentious appearance on NBC’s “Today” show yesterday, Trump took issue with the media’s reporting on his comments about McCain’s war record, made at a conservative forum in Iowa.

Trump insisted in a telephone interview with anchor Matt Lauer that he had said “four times” that he respected those captured in war.

McCain said he believes it was “totally inappropriate for Mr. Trump to say he doesn’t like to be with people who are captured.”

He added: “The best thing to do is put it behind us and move forward.”

Herald wire services contributed to this report.