I think McCain lifted some lines from this episode of the Simpsons:
LISA: Mr. Burns, your campaign seems to have the momentum of a runaway freight train. Why are you so popular?
BURNS: Lisa, there’s no single answer. Some voters respond to my integrity, others are more impressed with my incorruptibility. Still others buy my determination to lower taxes. And the bureaucrats in the state capital can put that in their pipes and smoke it!