Re: Elections 2012 -- Kull Wahad!!!
Its the old Rovian strategy. Don't attack an opponent's weakness. Attack his strength.
Good article about the efficacy of the Bain ads (though be warned: the first half of the article is about a related but different topic, which is atypically bad construction by Silver).
The economic model part:
The Bain part:
Put concisely, as somebody pointed out a few days ago, "it's never the crime that kills you... it's the coverup."
Its the old Rovian strategy. Don't attack an opponent's weakness. Attack his strength.