So, what are they going to do? They're going to mount a mini-filibuster when the Senate opens for business today. Their aim is to delay the vote past 7 PM, in the hope that Republican Senators will depart for their inaugural social obligations, and thus delay the final vote until next week.
This is amazingly childish of them. They're not going to change anyone's mind. All they're going to do is make the Senate look silly. Of course, Boxer's already shown herself for what she is, prompting Tom Clancy to say "to have an elected official question one's integrity is rather like having a street whore question one's virginity".
I should expect nothing more from the Left, but hope springs eternal.