The latest Zogby/WSJ poll now shows the Senate race tied with Menendez at 40.4% and Kean Jr at 40.2%. Earlier Zogby polls showed Menendez with a slight lead, though all within the poll's margin of error. This is the third poll showing the race tightening.
I wouldn't trust the poll numbers, but the trend seems right. This same poll has James Webb leading George Allen by 8 points in VA, but other polls show Allen ahead.