According to this article at HuffPo, Sen.Maria Cantwell, D-Wash., will vote for a plan that includes the public option if it gets to the floor using reconciliation. The article says she is the 35th senator to so pledge.
UPDATE 10:7 AM PST–According to Open Left, 45 senators (this includes Cantwell) say they are “open to using reconciliation to finish health reform,” while 35, also including Cantwell, have signed a letter asking that the public option be included in a reconciliation bill.
The upshot is both of our U.S. Senators are listening to regular people and doing the right thing.