If he un-conceedes now, and then still doesn't have the votes, he'll look like a fool.
And we need him desperately in the senate if we can't have him as our president!
Kerry's concession speech so early gave him high marks from the other side. So he left the campaign on a high note. He left with respect and dignity. Very helpful should things not go our way...and even more helpful if he runs again in 2008.
But

if things go our way, he still won't need to---- Bush will need to concede...which he won't... It will be extremely interesting if things do go our way, on how it will play out. I'm not going to think about that yet-not ready to get that emotional YET...hopefully by the end of this week we'll know more!