Religion has always been used as a sales tactic in politics. All you have to do is say "I'm a devote Christian" and you've got an instant base. Politicians have been preying on this for decades. The problem with non-religious people is that you have no instant base with them. You are judged by your actions and your record, rather than your affiliation with some belief system. That is much harder. Politicians go after the low hanging fruit, always. If they want to target the non-religious demographic they're going to have to actually work for it. I'm not holding my breath.