It's easy. Keep the focus, don't worry about what the McCain campaign says. Just find a way to insert the fact that McCain is senile in every possible post. When do you stop doing so? When it makes it into the mainstream media as a focus of debate. Do not stop until then. We simply kick him in the balls, over and over again until he is finally squashed like a bug. There will be plenty of other things to focus on in the next few months, but for now: MCCAIN is SENILE - He might have Alzheimer's. Maybe his cancer is effecting his mental state, Maybe all that time in the POW camp caused some permanent damage.
Here's an example: The beltway pricks are trying to make the case that McCain doesn't have control of his campaign and that is why he is allowing this sleazy campaign to go on. Sure, agree with that, then point out that he doesn't pay attention to the details of his campaign because he is fucking senile. When McCain flip-flops on an issue, calling him dishonest is not enough. Point out the possibility that he doesn't remember what his position was previously...Because he is SENILE. If you are a doctor, give medical reasons why you think he is SENILE. The fact that he is not making his medical records available to the general public...SENILE.
Are we getting the idea? Can we stay on message for once. What is the deal with the Left? You aren't going to beat these assholes by defending against whatever attack they come up with. You have to hit them and hit them harder, with stuff that has more of a ring of truth to it. The McCain is SENILE meme will work. All I am saying, is give it a chance.
Update: It's worth noting that there is a possible correlation between PTSD and Alzheimer's and other dementia disorders.
