Joe Biden has told some top Democrats that he’s running for president, Axios reported Saturday.

The former vice president even set Tuesday as a likely announcement date, the paper said.

Even Biden’s youngest brother, Frank, told the Palm Beach Post that he expects a run.

“Now, he could surprise me,” the brother, a Palm Beach resident, told the paper. “But I know the family’s behind him 100 percent.”

In an interview Saturday night with Jeanine Pirro on Fox News, Trump said he wasn’t worried.

“A lot of people say Biden is doing OK, but you know, he was always a 1-percenter,” Trump taunted.

“He ran two or three times, he never got above 1 percent. And then [Barack] Obama came along and took him off the trash heap, and he became a vice president, and now he’s leading.”

Meanwhile, former San Antonio Mayor Julián Castro dove into the 2020 presidential race Saturday, becoming the latest Democratic contender for his party’s nomination.