From a Senate source:

Here’s what I hear:
Webb’s arm was twisted out of socket on cloture on motion to proceed, and rumor is he will vote no on cloture motion… But honestly I think he’s a toss up.
Domenici sounds like a no but hard to tell – you guys were our original source. My guess is that when his federal judges amendment hit a wall tonight (sitting behind the Baucus amendment), and given that it “falls off” post cloture tomorrow, he becomes a no on cloture.
Burr supposedly came out publicly as no on cloture – I didn’t hear or see… But rumor is that he’ll be a no on cloture…
Bond I think is good…
Rumor is that Bayh is potentially a flip which would mix things up a bit…
Though, I would add Nelson in too… I think Bond is most solid and then Domenici, Burr and Nelson (55/45)… Then Webb (50/50), then Ensign (45/55)…
Bloomberg article is right that Gregg, Bingaman, Murkowski, Pryor, Stevens are undecided but possible…