Hey, if you live in Chicago you have until October 7 to make sure that you're registered for the upcoming elections. Go to the Chicago Board of Elections website and you can check your registration. If you need to update your address or register, there's a form you can print out and then mail in.
If you live anywhere else, the Obama campaign has an easy website to register to vote. (You don't have to vote for him in the election*, you can just use the form.)
* But you should.