Who should win the nomination if Biden drops out?

Biden will almost certainly win - but if he drops out, there's only one alternative.

A major party’s presumptive nominee enmeshed in multiple sexual harassment and assault scandals dropping out months before the general election is the sort of thing that seems like it could never actually happen — until it does. My bet is still that Joe Biden will power through the uproar over Tara Reade and accept the Democratic nomination in a few mon…