Yes -- it's important to demonstrate, viscerally, how incompetent and dangerous rule by McCain and Palin would be. However, equating them to Bush raises additional emotion which may make that task difficult. There's a lot of cognitive dissonance to overcome among people who elected Bush in years past; they don't want to be reminded they were wrong.

I guess my point is, sink them on their own faults. There are plenty. And people who make decisions based on facts are already on the ball; it's time to start winning over people who trust only their gut. (And that's a good thing - the gut's a great decision-maker. It's just that you have to explain things to it a different way.)