ag is the rather obvious choice - he's a professor in economics.
Beyond that, I think me, Beet and Phnkrocket have about as much education on the subject?
People like Carl and Jmf also has some knowledge. Opebo, of course, is completely clueless. In fact, not realizing this is an indication of someone not knowing much about economics.
Seriously, dude.
I've spent sufficient time explaining economics to people not getting it to not assume that people are voting for him merely as a joke. I've learned a long time ago that there is no position on economics that is so stupid that it can't possibly be serious.
I'll grant you that I don't think Opebo himself thinks he is knowledgeable. I'm less convinced about other people though.