E&E Daily has a nice breakdown of where the votes are and who is on the fence on the Waxman-Markey "jobs bill" in this PDF. If it is brought to a vote, then you can assume that the votes to pass are all lined up. If there is a delay, for any reason, there remains some uncertainty. My guess is that it has the votes and will pass. There is little political risk for Democrats to vote for the bill as conventional wisdom holds that it can't get through the Senate. On the other hand, not voting for it guarantees offending Congressional leadership and the President. On this basis I'd be very surprised if the Democrats cannot line up the needed votes.
Next week I'll discuss what happens after Waxman-Markey.