this page at the Chicago Board of Elections. You can also early vote at Board of Election HQ located at 69 W. Washington, 6th Floor
Also if you haven't registered to vote you may still register until November 3rd however you must vote during that same visit. Visit this page for more details, however grace period registration and voting will take place at Board of Election HQ located at 69 W. Washington, 6th Floor.
Finally, I recognize that for many of you it's a sore point but it appears that the new ward map is the guide for the coming Presidential elections. If you're unsure of where your polling place is, then click on this page enter in the appropriate information and you will know the address of your polling place. It may be in a different ward although the remap is only being utilized for the 2012 elections.
If you don't plan to early vote Election Day is Nov. 6th and all polls will be open from 6AM to 7PM.