The Repubs lost a large percentage of hispanic voters this election. With votes so close, like J.D.s, in a state with a heavy hispanic population, it's not hard to make the case that the unworkable "enforcement only" position cost him his seat.
1) The amendment to make English the oficial language passed overwhemingly, as did other intiatives having to do with preservation of the American culture and our border by the people of Arizona.
2) J.D.'s opponent ran as a border hawk.
3) When you can find a way to explain how intiatives favored by border hawks passed by more then merely a small margin, around 70%?, and explain away how a Democrat won with the same position as J.D. on the border, and somehow find a way to tie this all into a rejection of enforcing the border? I'll listen. But I don't think you can do it because logically your claim doesn't make a damn bit of sense when one looks at these pesky little details.