Big ole tip of the hat to Red State on this one:

Just over a month ago, Specter told The Hill “I am staying a Republican because I think I have an important role — a more important role — to play there. I think the United States desperately needs a two party system. It is the basis of politics in America. I think each of the 41 Republican Senators, in a sense, and I don’t want to overstate this, is a national asset, because if one was gone you would only have 40. The Democrats would have 60 and they would control all of the mechanisms of government.”