Clinton tells Kerry to avoid cultural issues. He then praises Blair for the war on terror. That means kerry can't run on that either. The economy has turned around so Kerry can't use that. Bush signed the largest education bill in history in conjunction with ted kennedy.(something most conservatives aren't exactly happy about) Clinton already solved gun control with all the Brady and Assault Weapons ban legislation. Bush's prescription drug plan for senior citizens protects him from any assaults on him from the health care front.
What exacly is left for Kerry to run on?
Nothing. That's why the DORK rides his bicycle all the time.
How about "I'm not Bush." It's not much of a winning strategy, but it's all he has.