Former New York City Mayor Michael Bloomberg thinks there's a "55 percent chance" President TrumpDonald TrumpGraham: 'I could not disagree more' with Trump support of Afghanistan troop withdrawal GOP believes Democrats handing them winning 2022 campaign Former GOP operative installed as NSA top lawyer resigns MORE will be reelected in 2020.

Bloomberg, who politically identifies as independent, told New York Times columnist Frank Bruni that he thought Democrats didn't have an effective message to win the 2016 election and could repeat that mistake in 2020.

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“Hillary said, ‘Vote for me because I’m a woman and the other guy’s bad,’ ” Bloomberg said about 2016.

He said Democrats are still looking for issues and messages. And he worries that too many Democrats are eager to jump into the 2020 race.

“They’ll step on each other and re-elect Donald Trump,” Bloomberg said.

Bloomberg endorsed Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonPelosi on power in DC: 'You have to seize it' Cuba readies for life without Castro Chelsea Clinton: Pics of Trump getting vaccinated would help him 'claim credit' MORE in 2016 and spoke at the Democratic National Convention, calling Trump a "dangerous demagogue."