Posted to you in the other thread:
A combination of epic-level Demonrat fraud and control (in IL, especially, the complete control by the corrupt bipartisan Combine), the rise of social leftism in the formerly heavily middle/upper class GOP suburban areas (not just in CA & IL) over the past 25 years and demographic changes with legal (nevermind illegal) immigrants favoring the Demonrats by a wide margin. All a perfect mix for national suicide, or at least pushing us closer to Civil War II: The Die-Versity Bugaboo.
Not to mention the loss of 100,000+ people fleeing the state. Probably largely R’s.