Do Something

Only YOU can prevent McCain/Palin from getting elected. You can campaign even if you don't have time or money.

From Slate.com:
Harass your friends. Call them. E-mail them. Visit them at unexpected hours. (Since you know them, it's OK to show up after dark.) Threaten to break off the friendship unless they vote. And tell them to do the same to their friends. People respond better to someone they know than to strangers on their doorstep. You may be preaching to the choir if your network consists of like-minded people. But that can also be helpful—it's called getting out the base.