He made his announcement one step ahead of a sexual harrassment suit that's to be filed against him tomorrow. I get the feeling that his announcement today was designed to take the wind out of that suit's sails and put him ahead of the plaintiff. This way, he might be able to avoid the months and months of political agony that Clinton put himself--and the country--through in the Lewinsky affair.
A big question is: will he be able to stay in office until Nov.15? NJ has no Lieutenant Governor, so if he sticks around, there'll be no special election, and the State Senate Majority Leader, a Dem, will succeed him. The GOP is going to be clamoring to put the governorship on the ballot before 11/15, just as the Dems demanded after Toricelli resigned.