WI: Mark Zuckerberg
Get used to it folks.
Can't ...uhh... the Zuck.
Also can't Bleep the Streep. Meryl for President!
In all seriousness, probably Booker. Patrick seems like very much an outside possibility, and Baldwin has shown no interest in running. The others are all varying degrees of plausible (Harris next after Booker, then Warren, then Sanders, who I think is unlikely to run).
I think it will be a dark-horse candidate. So, of all of these, the most likely is Deval Patrick.
By the way :
WI: Mark Zuckerberg
Get used to it folks.
I'm not a native speaker, what does WI stands for here ? (I assume it's not Wisconsin.)
Write-in.