I think that Huckabee supporters were the ones responsible for defining evangelicalism as being concerned only with abortion and homosexuality. They proved that they didn’t care about any other issues.
Actually the only ones saying they’re only concerned about homosexuality and abortion are the left. saying it about the right. I would say they are makng use of a little fallacious reasoning.
I don’t like Huckabee either but I don’t think his supporters only care about one or two issues, as a whole.