Who does McCain have besides Chaffee?
Strongest is Snowe. Collins is a maybe. Others who have expressed a wish that it hadn't come to this are not a clear that they will vote against it. Even Frist says he wishes it hadn't come to this.
Most importantly, does Matthews know about Chaffee?? ;-)
Heck if I know who will actually ultimately discredit and embarrass themselves along with McCain (D).