Now that Harry Reid has announced that he will bring a bill with a public option to the Senate floor for consideration, he's using his press conference to hammer home the need for Democrats to hold together on the bill. He's sounding dog whistles that Senate blue dogs will definitely hear—talking about how much his caucus supports health care reform, mentioning the 60-year history of Democratic health care reform efforts, and emphasizing that there really aren't many moderate Republicans left. ("I can count them on two fingers.") Will it be enough to keep Blanche Lincoln, Mary Landrieu, and Ben Nelson on board for a motion to proceed when he brings his bill to the floor? He had better hope so.