But I've listened to Rush, Hannity, Chris Plant, Mark Levin and have yet to hear pro-Obama/anti-Romney ads. Fox News, WMAL,etc. And isn't the conservatives more Corporation friendly?
That would tell me that the right puts ideology above profit while the left doesn't.
That probably implies more that the ad time buyers figure those right wing audiences are a lost cause. Also, since right wing radio and Fox News have giant audiences, the ad time probably costs more than usual, which would make it even less worth it.