Former Vice President Joe Biden had harsh words for former presidential candidate Hillary Clinton on Thursday night.

“I never thought she was the correct candidate,” Biden said at the SALT conference in Las Vegas, according to Fusion reporter Hamilton Nolan. “I thought I was the correct candidate.”

TheStreet’s Ronald Orol, who was also at the SkyBridge Capital event, said the audience clapped at Biden’s comments.

“No man or woman should announce for the presidency unless they genuinely believe that for that moment in the nation’s history they are the most qualified person to deal with the issues facing the country,” TheStreet quoted him as saying.

He also didn’t rule out running himself in 2020, according to multiple reports from the event.

#2020? @SALTConference @JoeBiden is asked about running for President "Could I run- yes- will I- probably not but....I may very well do it" pic.twitter.com/qxbMjJry0c — Robert Wolf (@robertwolf32) May 19, 2017

Biden has in the past expressed regret at not running for the Democratic nomination. In a speech in March, he said he was the “best qualified.”

“I had planned on running for president, and although it would have been a very difficult primary, I think I could have won. I don’t know, maybe not. But I thought I could have won,” he said, The Hill reported at the time.

And while he supported Clinton throughout the campaign, he has since been critical of her run, saying in December that she never knew why she was running.

“I don’t think she ever really figured it out,” Biden said, according to the Los Angeles Times.

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