Former White House communications director Anthony ScaramucciAnthony ScaramucciFormer DeVos chief of staff joins anti-Trump group Scaramucci to Lemon: Trump 'doubling down' on downplaying virus 'should scare' viewers Sunday shows - Leaked audio of Trump's sister reverberates MORE said late Friday that there is “no question” that Michael BloombergMichael BloombergBloomberg rolls out M ad buy to boost Biden in Florida Democratic groups using Bloomberg money to launch M in Spanish language ads in Florida Bloomberg pays fines for 32,000 felons in Florida so they can vote MORE would be “the No. 1 threat” to President TrumpDonald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE should the former New York City mayor enter the 2020 Democratic presidential primary.

“I think the president would be very intimidated by a guy like Michael Bloomberg,” Scaramucci told CNN’s Chris CuomoChris CuomoCNN's Don Lemon: 'Blow up the entire system' remark taken out of context CNN's Lemon: 'We're going to have to blow up the entire system' if Democrats win back White House, Senate Giuliani criticizes NYC leadership: 'They're killing this city' MORE. “He’s a New Yorker. He could stand the onslaught of the president’s bullying. He’s worth probably five to eight times the president’s net worth. He could spend a fortune defending himself and getting ads up in all areas of the country.”

“And if Mike Bloomberg got the nomination, it’s very clear to me that he would beat Trump,” Scaramucci added, citing the billionaire businessman's “level of moderation,” “pro-business nature” and “social progressiveness.”

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Bloomberg on Friday officially filed as a candidate for the Alabama Democratic presidential primary, signaling the first step in a possible White House run that could shake up the crowded primary field.

If he enters the race, he would directly face off with former Vice President Joe BidenJoe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE and South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice MORE, the two leading moderate candidates.

He would also likely become a top target for progressive front-runners Sens. Elizabeth WarrenElizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.) and Bernie SandersBernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.), who have slammed the rich for holding too much power in U.S. politics and have insisted that the wealthiest Americans should pay higher taxes.

Amid speculation that Bloomberg would launch a presidential bid, Trump said Friday that he doesn’t think the former mayor would perform well in the primary. Trump added, however, that he’d like to run against Bloomberg, whom he nicknamed “little Michael.”

“Little Michael will fail. He’ll spend a lot of money. He’s got some really big issues, he’s got some personal problems and he’s got a lot of other problems,” Trump said. “He will not do very well and if he did, I would be happy. There’s nobody I’d rather run against than little Michael.”