Now you can follow the polls on your iPhone with Slate's Poll Tracker '08.
A Rasmussen poll shows Obama ahead 52-46 in Pennsylvania; the same poll on Thursday showed him with a 51-47 lead. A Quinnipiac University poll has Obama leading McCain by 10 points, though the same poll showed him with a 12-point lead early last week. A Muhlenberg poll shows Obama leading 52-46, while the same poll a week ago showed him leading 53-42. According to Pollster.com, the estimate in Pennsylvania has shifted 5.4 points toward McCain in the past week.—Abby Callard
Interactive feature by Matt Dodson.