Pelley: Bob, I wonder how seriously should we take the Cain campaign? Schieffer: I think it has to be taken very seriously at this point, Scott, and here's why. Think about this: Mitt Romney has been plodding along at about 25 percent in the polls and it's like he's been running most of his life. Rick Perry, the governor of Texas, gets into the race, zooms immediately to the top in the polls, has a couple of stumbles, and goes back down. But then you take Herman Cain, who has no real campaign staff, has not raised very much money...