This comes from the ladies at Bust magazine.

Give some thought to voting early (you can find out where at VoteForChange.com). Voting early does a number of things, most importantly ensuring you will get a vote. I say this because I recently read that one of the largest counties in Ohio only ordered as many ballots as they did in 2004, despite the predictions of a record turnout.

Voting early will also help reduce lines for other people, and hopefully help discourage them from leaving before casting their ballot (I've talked to people on my canvasses that waited as long as 3 hours to vote in 2004).