One Senator can withhold consent to move to the vote. As a practical matter, this is futile unless that Senator has 40 like-minded Senators, so as to be able to overcome a cloture motion.
There are other methods to delay taking the vote, but that's the most likely one in play here; and it won't play because Kerry won't find 40 like-minded Senators, willing to vote NAY on cloture, for this nominee.
I read that FRist and Reid are meeting later..an annoucement will come today, on the vote, because senators have to make travel plans..do you think it will come on MOnday...