Former President Obama endorsed Joe Biden Joe BidenSenate Republicans face tough decision on replacing Ginsburg What Senate Republicans have said about election-year Supreme Court vacancies Biden says Ginsburg successor should be picked by candidate who wins on Nov. 3 MORE’s White House bid through a video message on Tuesday.

The endorsement comes as Biden has all but locked up the Democratic presidential nomination after Sen. Bernie Sanders Bernie SandersKenosha will be a good bellwether in 2020 Biden's fiscal program: What is the likely market impact? McConnell accuses Democrats of sowing division by 'downplaying progress' on election security MORE (I-Vt.), his lone remaining rival, withdrew from the race last week. Sanders endorsed Biden on Monday.

While Obama has long spoken of his affinity for his former vice president, he maintained that he would not endorse in the Democratic primary until a clear nominee had emerged.

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Biden has frequently tied himself to Obama during the campaign, and he has maintained strong support among African American voters, who propelled him to victory in key primary states like South Carolina.

The endorsement plans were first reported by CBS News.

Updated at 11:54 a.m.