I am going to wildly speculate that Karl Rove is quietly orchestrating a shakeup within the GOP through the Tea Party movement. 2010 and 2012 are going to see candidates that conform to the views of Rove’s faction within the Republican Party(Ailes, Limbaugh, Cheney etc.). It might just work.
Your speculation is wildly wrong. Both Rove and Cheney endorsed Bennett. Google it.