Type in the address at which you are registered to vote and it will tell you your likely voting location. PLEASE, PLEASE verify this information today (Friday, 10/31) or Monday (11/3) and do not rely on this information to the point that you go to the location provided at the last minute, find out it's the wrong location, and then cannot vote.
Please also note that this is a Google estimate that may change before election day.
But I tried it and it was accurate for me and my sister.
http://maps.google.com/vote