Libertarian vice presidential nominee Bill Weld says he knows the term he most closely associates with Donald Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE.

“The noun that comes to my mind is screw loose,” he said Wednesday during a CNN town hall hosted by Anderson Cooper.

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“I think he’s a showman,” the former Massachusetts governor added of the GOP’s presidential nominee. "He’s a pied piper. He’s the music man. More recently it’s gotten more serious.

“It’s a temperamental question. I say this almost with affection for Donald Trump. Maybe he should consider some other line of work. Like anything other than president of the United States.”

Weld also dismissed critics who say voting third-party boosts Trump or Hillary Clinton Hillary Diane Rodham ClintonBiden leads Trump by 36 points nationally among Latinos: poll Democratic super PAC to hit Trump in battleground states over coronavirus deaths Battle lines drawn on precedent in Supreme Court fight MORE into the White House.

“If you want to waste your vote on Trump or Clinton, be our guest,” he said. "That’s pure speculation. "We believe in ourselves and our ticket.

“I think it would be refreshing to have a party that is not terribly partisan holding the White House."

Libertarian presidential nominee Gary Johnson Gary Earl JohnsonWhat the numbers say about Trump's chances at reelection Presidential race tightens in Minnesota as Trump plows resources into state The Hill's Campaign Report: Biden condemns violence, blames Trump for fomenting it l Bitter Mass. primaries reach the end l Super PAC spending set to explode MORE agreed, predicting a Clinton or Trump victory would hurt national unity.

“If either Trump or Clinton, things will be polarized more than ever,” he said. "Nobody’s going to get along with the other side.

“A wasted vote is a vote for somebody who you don’t believe in,” the former GOP governor of New Mexico added. "If we’re going to continue to vote for the lesser of two evils, that’s still evil.”

Clinton the Democratic presidential nominee, leads Trump by 5 points in the latest RealClearPolitics average of national polls.

Johnson is a distant third, falling about 34 points behind Clinton. He is closer to Trump but still lags roughly 29 points behind the billionaire.