[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2008/images/08/27/art.mccain.oil.gi.jpg caption=] FROM CNN's Jack Cafferty: Barack Obama is losing his lead over John McCain according to the latest polls. It is hardly an encouraging sign if your poll numbers are going down during the week you accept your party's nomination. The latest CNN/Opinion Research Corporation poll shows Barack Obama in a dead … Continue reading McCain’s attack ads changing your opinion?