Professor Jeffrey Hart makes an important distinction between these two terms in his piece on President Bush, arguing that our current administration behaves in ways that shame keepers of the conservative GOP flame.
These sorts of articles are important for people on the left -- it reminds us that not all Republicans act alike. Plus, they make us even more upset with our current White House residents -- if folks on the right are starting to turn on this guy, how the hell is he allowed to believe he has any "political capital"?