Romney's winning the media battle, for now. Polling also used to show Obama doing very well in the state's that mattered, but that is slipping away.
Based on the most recent polling, not guesses, I think the map today looks something like this:
Tried to use gray as little as possible. 259-244 Romney. So he'd need to win either Wisconsin or Michigan...or Wisconsin and Colorado.
The firewall doesn't look quite as strong now - Romney has potential in Pennsylvania, Nevada, and Virginia. And who know's what is going on in NH and OR.
I'm more interested in guesses than polls. Show your erudition! Any mechanic can give us a map of the polls.