There’s no indication that Huckabee is being considered, so consider this idle speculation like the Hillary chatter prior to Obama’s pick. But wouldn’t Huckabee make a lot of sense given the things we’ve learned the last two weeks? 1) McCain might have a “wealth problem,” and certainly Democrats are going to try to hit his wealth for all its worth in their play for working-class voters; Huckabee doesn’t have a problem on this front, and has lots of working-class cred. 2) The pro-choice trial balloon hasn’t been well received, and it’s clear that a pro-choice nominee would create a major disruption; Huckabee is pro-life. 3) Obama picked Biden who is going to a vivid presence (for better or worse) on the stump and could be formidable in debate; Huckabee is a great campaigner and might be just the guy to puncture Biden in a debate. 4) (This is a less important point.) The McCain folks have made a huge deal about differences between Obama and Biden during the primaries; McCain and Huckabee didn’t have much in the way of differences and went out of their way to praise each other. The other upsides are the press likes Huckabee (for now), he’s a different kind of Republican, and his selection would be such a shock, it might even be considered bold. The downsides are–as I’ve noted many times before–he doesn’t have much in the way of national security credentials and has a big seriousness gap, obviously not trifling matters. But if McCain can’t do Lieberman, and isn’t thrilled by Pawlenty or Romney, Huckabee might be worth a last-minute second look.