Let’s face it: None of our candidates really claim they’ll be constantly asking themselves that question when he hits the Oval Office. And they won’t even really be asking what would Ronald Reagan do, although their constant invocation of Reagan is a pretty stern implicit criticism of the Presidents Bush.
Still, in response to Joe’s question below: I would say that Huckabee is most like Bush. He’s all for the tax cuts, more with Bush on all the details of social conservatism than any other candidate, and certainly has the same weakness for compassionate policy. Huck has been critical of the president’s foreign policy "mentality." But if you look, again, to the details, it’s unclear what would really change after President Huck got up to foreign policy speed. (He may not have read the NIE, but let’s face it, the NIE ain’t rocket science and Huck is plenty smart.)
But no candidate (such as Thompson) is going to make it clear that his criticisms of Huck apply to the president (especially in SC, where Bush is still fairly popular among Republicans). And of course, given the fact that the president would be slaughtered if could run for reelection, no candidate is saying "stay the course."
I applaud the consistency (if not necessarily the wisdom) of those, such as some people at the Claremont Institute, who criticize both the president and Huck for being too evangelical.