Two of the things I hope for from Kerry as a leader are the ability to make reasoned decisions when he has time, and to make good snap decisions when he doesn't have time.
For whatever reasons, Gore did not convince enough voters that he could make snap decisions.
I think that Kerrys' record in the Senate speaks to the first hope, but I don't think anyone's record in government can speak to the second unless they have been in charge of something during a crisis - a wartime President, or Mayor of NYC in September of 2001, for example. Or in command during combat, as Kerry has. It may not be much to base an evaluation on, but I'm going with it... as I am very displeased with both Bush's reasoned and snap decisions, and would like to try someone else.