Fic's Law...

Remember, your characters have to make sense.
Or you will loose your Audiance.

Reality is under no such constraint
-- Fic's Law

Even worse, your John McCain is completely OOC. That man's a war hero, he's not going to suddenly, I don't know, campaign with a fake plumber or something, just to make your character look better. Even more ridiculous: al Qaeda endorsing McCain to show how awesome your Sue is. And I'm not even talking about Sarah Palin. The world doesn't work that way.
( from fanficrants: Dear America )