According to Pew, over the past three weeks white evangelicals have gone from 74-18 for McCain to 67-22, to 65-22. McCain’s shedding them mostly into the undecided column, which now is up to 13 percent. Whether they return to their Republican roots in a week is the question. The Obama campaign is presumably hoping to round up a chunk of them. The Matthew 25 ads here and here, airing on Christian radio, hope to accomplish just that.