They are willing to bravely support any progressive bill as long as there's no chance it can pass
http://www.salon.com/2010/02/23/democrats_34/
"The primary tactic in this game is Villain Rotation. They always have a handful of Democratic Senators announce that they will be the ones to deviate this time from the ostensible party position and impede success, but the designated Villain constantly shifts, so the Party itself can claim it supports these measures while an always-changing handful of their members invariably prevent it.
One minute, its Jay Rockefeller as the Prime Villain leading the way in protecting Bush surveillance programs and demanding telecom immunity;
the next minute, its Dianne Feinstein and Chuck Schumer joining hands and breaking with their party to ensure Michael Mukaseys confirmation as Attorney General;
then its Big Bad Joe Lieberman single-handedly blocking Medicare expansion; then its Blanche Lincoln and Jim Webb joining with Lindsey Graham to support the de-funding of civilian trials for Terrorists;
and now that they cant blame Lieberman or Ben Nelson any longer on health care (since they dont need 60 votes), Jay Rockefeller voluntarily returns to the Villain Role, stepping up to put an end to the pretend-movement among Senate Democrats to enact the public option via reconciliation.
Basically, this is how things have progressed:
Progressives: We want a public option!
Democrats/WH: We agree with you totally! Unfortunately, while we have 50 votes for it, we just dont have 60, so we cant have it. Gosh darn that filibuster rule.
Progressives: But you can use reconciliation like Bush did so often, and then you only need 50 votes.
Filbuster reform advocates/Obama loyalists: Hey progressives, dont be stupid! Be pragmatic. Its not realistic or Serious to use reconciliation to pass health care reform. None of this their fault. Its the fault of the filibuster. The White House wishes so badly that it could pass all these great progressive bills, but theyre powerless, and they just cant get 60 votes to do it.