[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2008/images/03/04/art.huckabee2.gi.jpg caption=] FROM CNN's Jack Cafferty: John McCain could seal the deal today when it comes to the Republican nomination… but that doesn't seem to be slowing down his rival, Mike Huckabee. The former Arkansas governor has staked his future in this race on Texas. Despite polls that show McCain leading in all … Continue reading Huckabee helping or hurting the GOP?