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President Biden announced Sunday that he would not seek reelection, after weeks of pressure from many Democratic leaders, who called on him to reconsider his reelection bid. Biden has endorsed Vice President Harris, and many top Democrats have offered their endorsements, as well.

But until the delegates vote at the Democratic National Convention, Harris’s nomination isn’t guaranteed and delegates are free to rally around another candidate.

The Washington Post is tracking what congressional Democrats and Democratic governors have said about selecting a new nominee.

Former president Bill Clinton and former secretary of state Hillary Clinton endorsed Harris while former president Barack Obama did not immediately endorse the vice president.

“I have extraordinary confidence that the leaders of our party will be able to create a process from which an outstanding nominee emerges,” Obama said in an statement.

Marianna Sotomayor, Azi Paybarah and Patrick Svitek contributed to this report. Totals include four independent senators who caucus with Democrats.

Washington Post illustration; Demetrius Freeman/The Washington Post; iStock.