RealClearPolitics has a good Electoral College map. You can click on any of the states to get a table of the recent polls in that state.
RealClearPolitics - 2012 Election Maps - Battle for White House
What this is showing as of now, is that Romney could win almost all of the toss up states and still lose the election. Specifically, Mr Romney could win:
Florida, North Carolina, Ohio, Iowa, Missouri, Arizona, and Colorado and still fall 2 votes short in the Electoral College.
That is a narrow path for Mr. Romney. There are multiple paths for President Obama.