From an Obama adviser:
Significant improvements over Ohio, especially among white men and seniors overall. In OH, for example, Clinton got 58% of white men, Obama got 39%. Exits now showing that Obama earned 45% in PA, and Clinton 55%. A 16 point gap narrowed to 10. With voters over 60 in OH, Clinton won 69%, Obama got 28%. In PA, Obama earned 41% of the vote among voters over 60, and Clinton won 59%. The gap among seniors was cut by more than half, from 41 to 19.