What's goin on, DNC?

I don't understand. I read that John Kerry, my Senator, has been selling out the public option in Committee discussions, and that Olympia Snowe has said publicly that she supports a public option....

So what's up with the email I just got from Organizing for America/DNC, which reads:

With the health care debate coming down to the wire in Congress, we need every vote we can get. Both of your Massachusetts senators are fighting hard for reform, but the two senators from nearby Maine -- Senator Olympia Snowe and Senator Susan Collins -- are under tremendous pressure to cave to special interests. They need to hear from constituents who want them to stand with the President -- and you can help.