That's a big ol' question. I don't entirely trust the polling around these states either. They're normally solid red but have been leaning Obama for a little while now, so...I guess if McCain gets the robo-calls going hard, he'll smear and push poll Obama to death in places like Colorado, Virginia and Missouri.
McCain swore to go the high road in 2000...he did, comparatively...and look what happened to him.
http://www.youtube.com/watch?v=kFPddnQOhME