While I am doubtful that Rick Scott will win, because of the national environment, I still think that people are grossly overestimating how well Nelson will do. It would not surprise me if this race were decided by 2 points or less. Florida is the quintessential example of a tossup state, and the polls here are reflective of that.
Don't you always predict Democrats will lose or otherwise do badly?
No. I merely try to provide what is, in my view, a realistic opinion on these races. I think that the Democrats are poised to make gains this year, and that they will take back the House, but I don't think they should get too overconfident. Overconfidence tends to hurt more than it helps.