McCain is to Reagan as Stalin was to Lenin. The GOP under McCain is going to mutate into some horrible, bloated social democratic party, and become nothing more than a minor election curiousity, much like the Green Party is today.
That is a terrible analogy unless you view Lenin as Russia’s benefactor. If so you need to read some Solzhenitsyn. Lenin’s comparatively brief time in power resulted in day for day Stalin-type murder and absolutism.