Not, for example, global warming or environmental protection more generally?
Not education?
Not the housing crunch and the associated financial travails?
Not taxation?
Not the income distribution?
Howcum?
Footnote I didn’t listen, but the transcript is deadly dull. (Sam Boyd finds it “worth a read,” but he must be a better reader than I am.) If asked to choose among the candidates based just on their answers, I would have to come down for “None of the above.”