Actually, true Republicans don't believe the party has gone far enough to the right. And they're right. The party will continue to move to the right and drag the country with it.
Which will result in a far more powerful, energetic country then the weak greece country the left is hoping for.
Powell is a very poor analytic, voting simply on race. Anything else seems too deep for someone like him, who was elevated by all kinds of affirmative action programs, not true ability.