Subtract 3.63% from Obama in every state and add 3.63% to McCain in every state:
What do you think?
Do these maps show what were the deciding states? If so, then what were they?
Feel free to post the results of the same scenario in other elections.
Colorado would go to McCain if he gets an 1,7% margin : it would give an Electoral College tie. But the election would have been decided by the House, who was in majority democrat => Obama wins.
In fact, McCain needs to win either Colorado and Iowa to win : it means a 2,29% lead. Conclusion : Democrats have a very important structural advantage.