During a pivotal election a reporter asked a candidate the difference between his platform and his opponent's. The candidate replied, "There is no difference. He's got the job, and I want it."
Most candidates cannot make many changes when they get there. Many intend a thorough housecleaning, but this is not always possible. Many incumbents burn out. Change is good for the good of the office. It keeps people alert.
In the long run, we as a nation and state have managed pretty dang good, regardless of which political party held the reins. When all is said and done, it is the individual who makes the difference.