Here's a wrap of some of the tracking polls we're following:
Gallup has Obama up 11 points among registered voters (52%-41%), eight points in its traditional likely-voter model (51%-43%), and nine points in its expanded likely-voter model (52%-43%).
Washington Post/ABC has Obama ahead by nine points, 53%-44%.
And yesterday's Hotline/Diageo had Obama ahead by seven, 48%-41%.
The AP: "Privately, McCain's aides said their man trailed Obama by 4 points nationwide in internal polling."
In addition, a new Marist national poll shows Obama up by seven, 50%-43%.