Who will replace Biden at the top of the ticket?

President Joe Biden has ended his campaign for president, vacating his spot at the top of the Democratic ticket and opening the way for an alternative candidate to step in and run against former President Donald Trump in November.

Democrats have spent weeks speculating about alternatives to Biden. At the top of that list is Vice President Kamala Harris, whom Biden has endorsed as his successor. She also may keep the tens of millions of dollars in donations held by the joint Biden-Harris campaign committee if chosen as the nominee.