First of all I don't know where O'Reilly thinks anyone pays attention to Obama anymore. I for one will click to another channel on tv if his face appears or his voice on the radio. Call it Obama fatigue.
Secondly Romney ran a terrible campaign. The left went negative and demonized him. He should have done the same. They could have a series of ads showing Obama as anti American by the people he's associated with over the years. They could have picked the likes of Rashid Khalidi, Bill Ayers, Tony Rezko, etc. One ad for each showing their "accomplishments" and Obama's association with them. Also Benghazi. They should have hammered the airwaves in the battleground states with these kinds of ads.