The man is certifiably insane. No one thinks that AIDS may be spread by casual contact, it’s simply not true, nor has anyone even considered the possibility for over a decade, if not two. From AP:

Huckabee acknowledged the prevailing scientific view then, and since, that the virus that causes AIDS is not spread through casual contact, but said that was not certain.

Remember that Huckabee is also the guy who doesn’t believe in evolution. He’s also the guy who hadn’t heard of the Iran NIE long after the story was national news. Huckabee may be a smooth talker, but it’s becoming increasingly clear that he’s nothing more than another dumb guy with a drawl, and our current dumb guy with a drawl in the Oval Office is more than enough for this lifetime.