http://en.wikipedia.org/wiki/Opinion_polling_for_the_United_States_presidential_election%2C_2008#General_electionBut I haven't checked it in a couple days. As far as the latest polling goes, it jibes far enough out of how the polls have been trending I'm inclined to distrust it, until more polls come out showing a continuation of that trend.
Anyway, if you don't want to volunteer for Obama or Hillary, I can guarantee you that the Democrats running for local offices in your area would love to have you volunteer for them, plus, they are running for offices local enough that you could actually get them to listen to your concerns and give you feedback.