The Dems have already threatened "reconciliation," i.e. 51 votes. Bill Clinton told them that the details don't matter -- just pass something!
Clinton is right about them having to pass something (for Obama not them, Clinton made his own congress walk the plank) but I don't think reconciliation will help them do it. I have heard many democrats on MSNBC ruin the progressives day by telling them that reconciliation wont work for that type of reform. Bush used it for tax cuts, that's why they expire automatically.
I have been calling that the ‘empty gun on the table’. Progressives demand the Senate use it, every night on MSNBC. I think they want the Senate to completely change the Senate rules as republicans threatened to, to allow it to be passed.
The bigger threat is budget conference report which gives Blue Dogs cover to vote against it then.