Dunce question: How does it come about that only a few senators like Collins, Murkowski, McCain, and now Romney receive so much more spotlighting than the other fifty or so? I know it's described as a moderate darling thing, but I don't understand how that status comes about or why they are singled out from rest of their party. All of them are bad, but it's happened again with Alexander this time, and even though he is the same as the rest the attention given to him, Collins, and Murkowski seems to only provide a shield to the others.