Former New York City Mayor Michael Bloomberg (I) says President Trump Donald 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 is likely to win reelection in 2020 because Democrats will be hamstrung by the deep fissures between the liberal and moderate wings of the party.

Speaking Tuesday night before Republican Karen Handel claimed victory over Democrat John Ossoff in a special House election in Georgia, Bloomberg stood by his previous statement that Trump has a “55 percent” chance of winning reelection.

“The incumbent always has an advantage,” Bloomberg told CNN.

“And the Democratic Party is going to be torn apart by the left and the centralists,” he continued. “Now, the Republican Party is also being torn apart between the centralists and the hard right, but they've rented a candidate. The candidate has rented a party, and they will probably without much fuss get behind Donald Trump, I would assume, assuming he runs for reelection.”

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Democrats are struggling to turn the energy from the their grassroots base into electoral victories.

Many in the media cast Tuesday night’s special election in Georgia as a referendum on the Trump presidency. The GOP candidate triumphed in what ended up being the most expensive House race in history.

Republicans have now won all four special House elections held this year, although these are not always a harbinger of things to come. Democrats are hopeful 2018 will be kinder to them, as the party in power typically loses seats in midterm elections.