From Public Policy Polling, a Dem-leaning North Carolina firm: "Last week we found that Sherrod Brown had a 40/37 approval rating and was in deep trouble for reelection. This week we found that Bill
Nelson has a 36/33 approval rating.
"You would expect with such similar numbers to Brown, Nelson would be in big trouble as well. But the Florida Senate numbers we'll release tomorrow show that Nelson isn't in nearly as much danger as Brown, so long as Jeb Bush doesn't run against him. The difference between Brown's standing and Nelson's is an
example of the fact that not all approval numbers are created equal- even if they are virtually identical."
Read more here.