As some of you might have heard, the United States is in the midst of an election. While the official voting day is November 4th, it is possible to vote early in 30 states and many are recommending that voters take advantage of the fact that you can vote right now in many states. The advantages of voting early is that you can accommodate your work or school schedule and allow yourself some leeway on November 4th in the event that something makes it impossible to get to the polls.
In addition - and perhaps most importantly - you can allow yourself time to dispute any attempts to prevent you from voting. In some states, efforts have been made to disqualify college students from voting due to dorm addresses, etc. Before your hit the polls, be sure to know your rights and make sure your vote is counted. Remember that provisional ballots - which may be offered - can be thrown out, so make sure you get a proper ballot.
You can find out if you're eligible for an early vote by visiting this page.