Here are the latest polls from the battleground states, updated as needed:
Colorado: Obama 49%, Romney 48% (Rasmussen)
Iowa: Obama 49%, Romney 47% (Rasmussen)
Michigan: Obama 49%, Romney 46% (Foster McCollum)
Michigan: Obama 48%, Romney 45% (EPIC-MRA)
Pennsylvania: Obama 47%, Romney 45% (Susquehanna)

