Alexander Burns sees no other state "as daunting – or as alarming to other members of his party – as the state of Ohio":

This morning’s Washington Post poll found Obama leading Romney by 8 points in the Buckeye State. That’s on the high end of recent margins, but the trend is unambiguously in the president’s favor: Obama was up 5 in an Ohio Newspaper Organization poll, up 4 in a Purple Strategies poll, and up 7 in a Fox News poll and an NBC News/Wall Street Journal/Marist College Poll. That’s all in the last two weeks.

Nate Cohn isn't expecting a Romney rebound:

[A] quick look at Romney’s favorability ratings in Ohio suggests that Romney’s chances of a comeback in the state are worse than Obama’s modest 4-point lead suggests. In post-DNC polling, Romney’s unfavorable ratings exceeded 49 percent in every poll of likely voters. On average, his favorability rating is underwater by an average of 7 points, 43-50, and that’s with the benefit of an outlying Rasmussen poll showing Romney’s favorables at 50 percent. 

Florida, another Romney must-win, doesn't look much better for him. Chart from TPM.