I am surprised and saddened that the Republican
party has not split.
Bushites characterized by - favoring bigger, more powerful government, fiscal irresponsibility, and telling everyone what they should believe - move to one side.
Libertarian, the-best-government-is-the-smallest-government, balanced budget loving conservatives - to the other side.
Why has that not happened?
Scientific answer to the question - a dark force exists in the political universe. We can use this dark force to measure the power of a political party (although this suffers from problems of a nominal fallacy, I will continue with it because it is useful).
The dark force is at work when a political party with repulsive moieties remains together.
Investigations are currently underway on a few promising hypotheses