With things as close as they are, don't be so sure... everything has the potential to make a difference right now. Its not like a single thing is likely to do it, it has boiled down to who can pile on the most. States that are neck and neck may be decided by a few thousand votes... or less... you have no idea what might change a handful of minds. Remember Kerry's base is weaker, he has 85-89% of the Democratic vote locked up, Bush is around 93-94%. Its a numbers game now... either turning folks or encouraging/discouraging them to vote.