Today, a poll from The Forum newspaper (?) shows Obama ahead - albeit within the margin of error - in North Dakota.
If this is true, it's quite significant. Not only has North Dakota not voted for a Democratic presidential candidate since 1964, but Obama effectively conceded the state a month ago. His campaign once had hoped to pick it off, and had opened almost a dozen offices across the state, only to eventually abandon their efforts. So despite having given up on the state, Obama might be tied there, or even winning it, anyway.
For what it's worth, Nate Silver ain't buyin' it.