Here are the latest polls from the battleground:

Colorado: Romney 50%, Obama 46% (Rasmussen)

Michigan: Obama 52%, Romney 43% (Angus Reid)

Ohio: Obama 48%, Romney 48% (Angus Reid)

Ohio: Obama 50%, Romney 45% (CBS News/Quinnipiac)

Pennsylvania: Obama 50%, Romney 45% (Morning Call/Muhlenberg)

Pennsylvania: Obama 48%, Romney 44% (Pulse Opinion Research)

Virginia: Obama 47%, Romney 46% (Pulse Opinion Research)

Wisconsin: Obama 51%, Romney 46% (Angus Reid)

Wisconsin: Obama 50%, Romney 47% (Pulse Opinion Research)