It works the same way with both parties.  Read Ken Buck's new book, "Draining the Swamp." He spells it all out.

A Califonia Democrat in the House was recently immediately removed from his committee seat right on the house floor when he voted against a tax increase that the Democrat Establishment favored.

Buck thinks the only way to change the system is for the stars to call for an Article V Constitutional Convention limited to term limits and a balanced budget.