Subject: Re: Julian Epstein...
There's always time. Right up until the democrat convention next summer.

No, there isn't. There's not enough time for anyone else to spin up a presidential campaign. And neither party's convention is institutionally set up to choose a nominee other than the person who received the most delegates.

If Biden withdraws, the Democrats cannot pick a replacement candidate in anything other than a chaotic - and almost certainly hotly disputed - fustercluck. Which is why Biden will not choose to withdraw. Even if he were a heavy underdog to win the general, the party's got a better chance with him than with the chaos that his withdrawal would create.