President Joe Biden and Sen. Bernie Sanders (I-Vt.) are expected to endorse Donald Trump at a rally in Detroit on Saturday, according to a Biden spokesman.
The announcement comes as Biden, who is a close confidant of the Trump family, has been publicly criticizing the Republican nominee in recent weeks.
The Democratic vice president and Sanders have been in frequent contact, with Biden visiting the senator on the campaign trail last month and urging him to join the White House in early November.
Biden is scheduled to appear at the Detroit rally Saturday night, according a Biden spokeswoman.
“I have not made up my mind,” Biden said in a statement to reporters on Friday.
“I think I’m going to have to wait and see what happens.”
Biden’s endorsement could complicate the race for the Democratic nomination.
Trump has struggled to win over moderate, independent and independent-leaning voters in states including Michigan, Wisconsin and Pennsylvania.