This page A16 article in the New York Times on Ohio brings nothing but bad news for the GOP (the NYTimes/CBS Poll finds Ohioans "overwhelmingly favoring Democrats"). If the elections were held today, the GOP would lose. The only note contrary to this opinion is this paragraph that may indicate that the GOP voters are not yet fully engaged.
"One bright spot for the president and Republicans was that while about 60 percent said they had made up their minds about this year’s elections, 4 in 10 said it was too early to say how they would vote." If three out of those four would end up voting Republican, we would end having an interesting election.