Update: After Public Option Concession To Blue Dogs, 57 House Progressives Say They’ll Vote

As an update to this post, 57 House progressives have now signed a letter vowing to vote against health care legislation unless concessions to conservative Blue Dogs related to the public option are reversed. That’s up from 53 this afternoon, which was already more than enough, in theory, to kill the bill. You can view the final copy of the letter, including all signatories at this link.