I hoe you are wrong too. Unfortunately, your scenario has merit. The little pukes will want to push for a "big" event so the press can play it up and drive Kommie Kerrie into the White House. If that happens we are gonna NEED to have had the AWB sunsetted `cause we will be fighting off the arrogant bastards right here.
Without a doubt the biggest terrorist target will be GWB himself. He is the one of the few leaders in the world standing up to the beheading barbarians. GWB will also be vulnerable during the campaign. Much more vulnerable then if this was not an election year. If there is an attack on the Dem convention site, I would expect it to be mild and it will be primarily done to motivate sympathy for the Democratic party that believes we were wrong in taking down Saddam. Also, the far left will try to blame GWB for the attack. The terrorists though may not care too much about the convention sites. They will be well guarded and well protected. My guess is that they will try to directly affect the voting itself by making potential Bush voters afraid to venture out and vote. Targeted anthrax attacks and release of small pox would be most affective.
Unfortunately we must also be wary of Michael Moore disciples who actually believe his trash. The far left could also try to camoflauge its attack by making it look like the jihadists were the actual attackers. Unfortunately its going to be a very interesting election year.