This early voting thing is fantastic, especially if you want to beat the mobs on Election Day. Granted, I've read of long lines in some cities, which ought to be an indicator of just how high voter turnout will be this year, and which is hopefully an indicator of how many voters are motivated by a real "mad as hell and not going to take it any more" desire for change. In the past I've only ever voted on the day, and have stood in line for upwards of three hours. Today I just walked in, did my bit, and got out of there in about as much time as it takes to order lunch at Sonic. It was one of those head-smacking "What was I thinking?" moments, you might say.
Seriously, just do it now.