Congress will do its darndest
I think that no matter who is elected President, unless it's Ron Paul, we're going to have another attempt at reviving the Assault Weapons Ban, especially if the decision in Heller doesn't favor individual rights. Since Ron Paul will not be elected President in this election barring extraordinary circumstances I'd say it's almost certain.
Hillary Clinton, Barrack Obama, John McCain. In the end it really makes no difference. Many involved in RKBA thought that George W. was going to be a friend to gun rights and yet he said that if a renewal of the AWB crossed his desk he'd sign it. Then, too, we also have the stand taken by the Solictor General during Heller.
The only way that a new AWB will be defeated is if everyone in the gun community comes together. That means hunters, people who only keep a pistol in their nightstand, black rifle owners, literally everybody. We also have to keep up the task of educating non-gun owners and bringing them over to our side, or at the very least, understanding and respecting us. New York has yet more anti-firearm bills pending. At least one of them makes reference to "assault weapons" and "spraying" to kill human beings. Sadly, much of the public doesn't understand that you can only "spray" with a machine gun and the guns in question are most certainly not machine guns.
Our enemy is ignorance, just as much, if not more so, than deliberate malice.