President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE told NBC’s “Meet the Press” in an interview broadcast Sunday that he would prefer to run against former Vice President Joe Biden Joe BidenPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Fox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio MORE in 2020.

Trump told host Chuck Todd Charles (Chuck) David ToddMurkowski: Supreme Court nominee should not be taken up before election Republican senator says plans to confirm justice before election 'completely consistent with the precedent' Sunday shows - Trump team defends coronavirus response MORE that he would rather run against Biden than run against Hillary Clinton Hillary Diane Rodham ClintonFox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio Trump, Biden court Black business owners in final election sprint The power of incumbency: How Trump is using the Oval Office to win reelection MORE, who remains a frequent target of Trump even after he defeated her in the 2016 election.

“I actually think that Hillary Clinton was a great candidate. She was very smart. She was very tough. She was ruthless and vicious,” Trump said. “[Biden’s] sleepy. She was not sleepy.”

WATCH: Trump says Biden would be easier to beat than Clinton was in 2016 #MTP #IfItsSunday pic.twitter.com/GWAe6AIsSF — Meet the Press (@MeetThePress) June 23, 2019

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Trump has made similar remarks about Biden, who has consistently led the crowded Democratic field, before.

“I’d rather run against, I think, Biden than anybody,” Trump told reporters while leaving the White House for Iowa earlier this month. “I think he’s the weakest mentally and I like running against people that are weak mentally … The other ones have much more energy."

Trump’s reelection campaign has reportedly cut ties with a polling firm whose internal polling indicated Biden leads Trump in several key states after the data leaked to the press.

Trump campaign manager Brad Parscale Bradley (Brad) James ParscaleMORE has called the leaked numbers “ancient, in campaign terms” and said they predate the conclusion of special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE’s report.

Trump also said on "Meet the Press" that he is not prepared to lose his reelection bid.

"It would be much better, it would be much better if I said, 'Yeah.' It would be much easier for me to say, 'Oh yes.' No I'm probably not too prepared to lose. I don't like losing. I haven't lost very much in my life," he said..

"You didn't like the fact that you lost the popular vote. That bothered you, didn't it?" Todd noted.

"Well, I think it was a -- I mean, I'll say something that, again, is controversial. There were a lot of votes cast that I don't believe," the president replied.