Webb (D-VA) and Bingaman (D-NM) still unsure. Via Jim Geraghty:

I just got off the phone with Jim Webb's office: He's undecided.

Another "don't know" to add: Jeff Bingaman, D-N.M., does not know how he will vote yet, wants to see how the amendments shape up. According to his staff, he has been managing the energy bill and has not been able to follow the most recent developments; he still has "considerable problems" with the guest worker program.