1) Casey will edge out Santorum for less then 2,000 votes.
He'll win by larger than that most likely.
2) Michigan, Wisconsin, Maine, and possibly Illinois will elect Republican Governors.
Michigan - likely, Wisconsin - slim chance, Maine - possibly but less likely, Illinois - not likely
3) Democrats take Missouri, and Tennesse Senate Races in upsets.
Missouri is a complete toss-up, wouldn't be so much of an upset. I'd love to see Tennesse but that's probalby not happening.
4) Hillary Clinton wins reelection.
Duh. I don't think anyone is predicting otherwise.
5) Bill Nelson wins with 57% of the vote against Katherine Harris.
That's probably the minimum he'll get.
6) One of the three states (Maryland, Washington, or New Jersey); A Republican defeats an incumbent Senator.
New Jersey is the only one of those with a realistic chance.