The conservative base's favorite person, great name recognition, great certain endorsements (Beck, every conservative blog, most conservative talk hosts - yes, even over Palin), and the fact that every other potential candidate is either unknown, uninspiring, or has serious issues.
He seems like a pretty good guy to go out for a beer with, after he loses the election. That is the "message" I got from the ad.
I'm just about ready to support this guy over Murkowski and Miller. I'm not a fan of Miller simply due to the Palin connection, and I think Murkowski is somewhat being an attention-whore. McAdams seems somewhat genuine at least, and isn't in this for personal gain.