 And the White House has been pointing out that the panic isn't really reflected in the polls, though one today suggests that 56% of Biden supporters now want him to withdraw. The loyalists, an ever-diminishing number, continue to point out that there's no mechanism to remove Joe Biden as the nominee anyway. But that optimism feels like clutching at straws, since political leadership can evaporate in a moment, and Joe Biden is just having too many of those moments right now.