Can the Dems Keep the Senate?

Leo, the NYT computer model for Senate races, currently gives Dems a 56% chance of keeping their majority.

Leo really doesn’t like Scott Brown.  He [It?] gives Brown only a 3% chance of beating Jeanne Shaheen in New Hampshire.

As the election season draaaags on, it will be interesting to compare Josh Katz and his Leo with Nate Silver and his FiveThirtyEight.