He should have gone to Iraq during the 2004 campaign.
Not after getting nominated, before hand yes! I suggested as much
On his visit to Iraq now i doubt thats of much importance outside of his job as a senator, on Iowa Bradley went on several trips to Iowa and New Hampshire after 2000 as did Gore, that said Kerry will certianly think about a second run in 2008, like in 1972 with HH he wont win but i doubt he will get hammered, if she runs Clinton runs the risk of a real disaster forcing her out early on (PERHAPS!), I still expect Bayh to run and stand a good chance of winning esspecially if Warner doesn't and i expect Warner not to and run for the Senate instead.
