Deepak Chopra explains the Sarah Palin effect:

The original upwelling of support for Obama came from consciousness, not from issues. In the spring this upwelling seemed unstoppable, but resistance hadn't taken a stand yet. Now we are witnessing, in the rise of Sarah Palin, the full force of "Let me sleep" when faced with a wake-up call. (She trumps even this level of lethargy by adding know-nothing to do-nothing.) If consciousness wants to move, it will have to push resistance out of the way. That's what happens when individuals strive for change, and the same thing applies to societies.

Inertia: When know nothing - do nothing becomes acceptable.