NYC Mayor Bill de Blasio to announce entry into crowded 2020 White House race Thursday, source says

New York City Mayor Bill de Blasio, who was widely known to be mulling a White House run, will announce on Thursday that he is officially entering the 2020 race, a source familiar with the situation told Fox News.

De Blasio will make the announcement in a Thursday morning video followed by an appearance on ABC News’ “Good Morning America,” the source said.

The mayor would be the 23rd Democrat vying for the presidency, following Montana Gov. Steve Bullock, who announced Tuesday that he’s seeking the presidential nomination.

The New York City mayor had announced travel plans to a pair of early voting states. After the TV appearance, he will travel to Iowa on Friday and South Carolina on Saturday, a spokeswoman told The Associated Press.

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The mayor had been teasing that he would announce his decision this week.

Fox News’ Tamara Gitt and The Associated Press contributed to this report.