We've said before that 2012 will be a very difficult year for Senate Democrats. They have only a couple real targets on the map and will be defending about two dozen seats overall -- many of which could be competitive.

DSCC Chairman Bob Menendez (D-N.J.) could be in one of them.

A new Fairleigh-Dickinson poll shows Menendez leading 2006 GOP nominee Tom Kean Jr. within the margin of error, 39-38, in a potential rematch. The poll shows Menendez with a 29 percent favorability, compared to 25 percent unfavorable. Kean's split is 28-11.

Menendez holds a more comfortable lead -- 43-25 -- over state Sen. Mike Doherty.