David Frum makes one:

[I]t’s simply blind to deny that America’s terrorist enemies would rejoice to see Bush go — just as it would have been blind to deny that the Soviets would have been delighted to see Ronald Reagan lose in 1984.

And the administration needs to keep that awareness in mind — because America’s enemies may translate their eagerness to defeat Bush into action. Campaigns always fear “October surprises.” But this year, the October surprise may be bin Laden’s.