Its an intentional bookcase that looks like a cross.
What part of campaign politics don’t you understand?
I understand it quite well. You seem unwilling to explicitly admit that Huckabee is lying about it. So you rationalize it with the euphamism: campaign politics.
Translation: It's a bookcase that was clearly intended to form a cross in the video, but it's OK for Huckabee to lie about it because, hey, that's politics.