WE'RE THE sTUPID PARTY, NOT THE IGNORANT ONE:

Beyond his handling of personal information, he also casually accused the chairwoman of the Federal Reserve of corruption, claimed that the bipartisan national debate commission was rigged against him, and stated that Mrs. Clinton had not proposed a child care plan. (She has, and did so a year before he did.)

He also mocked an African-American pastor who had just welcomed him to her church, and again referred to Senator Elizabeth Warren of Massachusetts, who once said she had Native American roots, as "Pocahontas."

And that was all before Friday night, when Mr. Trump hinted at violence against Mrs. Clinton by inviting her Secret Service detail to disarm "and see what happens to her."

Routine falsehoods, unfounded claims and inflammatory language have long been staples of Mr. Trump's anything-goes campaign. But as the polls tighten and November nears, his behavior, and the implications for the country should he become president, are alarming veteran political observers -- and leaving them deeply worried about the precedent being set, regardless of who wins the White House.

"It's frightening," said Vin Weber, a former Republican congressman from Minnesota. "Our politics, because of him, is descending to the level of a third-world country. There's just nothing beneath him. And I don't know why we would think he would change if he became president. That's what's really scary."

Stephen Hess, who served in the Eisenhower and Nixon administrations, could not even contemplate the prospect of Mr. Trump as commander in chief.

"It's incredibly depressing," Mr. Hess said of Mr. Trump. "He's the most profoundly ignorant man I've ever seen at this level in terms of understanding the American presidency, and, even more troubling, he makes no effort to learn anything."

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