 In our top story this morning, many Democrats already backing Vice President Kamala Harris to replace President Biden as he's dropping out of the race, he announced yesterday. But there's at least one former Democrat who says he might rejoin the party to run against her. West Virginia Independent Senator Joe Manchin was, until this year, a lifelong Democrat, but has left the party. Now sources tell ABC News he's considering re-registering as a Democrat to run against Vice President Kamala Harris for the presidential nomination.