Chris Cillizza has a long post about Barack Obama's re-election chances and the electoral map.
I know I've made this point several times, but...Just stop it!
States are not units which move independently of each other. They just aren't. Instead, when Obama is more or less popular, or generically whenever one party becomes more popular, it produces more-or-less equal shifts across all states. If Obama wins by five points nationally, he's going to win Pennsylvania and Michigan and Iowa and Wisconsin and, basically, the Al Gore states from 2000 plus a few others, and he'll win easily. If he loses by five points nationally, he's going to win what John Kerry won in 2004 minus a few states, and he'll lose easily. He's not going to run the same in most states but surge or drop dramatically in a handful of battleground states. It doesn't work like that.
It is possible that the shape of the electoral college could give one party a relatively small advantage in very close races, but (1) that doesn't appear to be true, and (2) the way to show that is to demonstrate that one party has more "wasted" votes (such as the huge Democratic majorities in New York or the huge Republican majorities in Utah). If you're not doing that, don't talk about the states this far out. And even if you are doing that, don't talk about the states this far out. It's possible we'll have a very close election and quirks in the electoral college and distribution of votes by state will matter, but it's far more likely that it will be just like most elections, with a clear national win one way or the other that is reflected and, for that matter, magnified by the electoral college.