Here are the latest polls from the battleground states:
Colorado: Romney 50%, Obama 46% (American Research Group)
Nevada: Obama 47%, Romney 47% (Rasmussen)
New Hampshire: Obama 47%, Romney 41% (WMUR)
North Carolina: Romney 50%, Obama 41% (Gravis)
Ohio: Romney 48%, Obama 47% (American Research Group)
Ohio: Obama 45%, Romney 44% (SurveyUSA)
Ohio: Obama 51%, Romney 47% (CNN/ORC)
Pennsylvania: Obama 43%, Romney 40% (Siena)