He did say he was becoming, not that he was the most endangered incumbent.
Well he isn't even remotely close to the position Rick Santorum is in.
If you throw out the Gallup, which currently screams outlier, he is not terribly far from Santorum. He is sslightly closer and has the benefit of having had the lead recently.
I now have Washington, Minnesota and Maryland in the Leans Democratic column. Michigan is rated as Likely Democratic.
New Jersey is now in my pure tossup/tilt GOP column. Governor Corzine only picked Menendez because Menendez had a huge financial warchest.
If Menendez is leading in the polls a week into his massive ad buy, Kean will win. In other words, if Kean is leading in October, this races is over.