BILL O'REILLY (HOST): OK, now Gallup got out of the presidential polling business because their performance was so abysmal. Rasmussen, I think, turned over management. AP, that's a big interesting one. Because polling not only is an indicator of who might be winning, but also as a psychological factor, because if voters think their candidate is going to lose they stay home or whatever.



Final question, in some of the analysis of the polling there is a bias indicator that has been studied. What is that?



SHANNON BREAM: Well, essentially they look at where the bias fans out, when you ask these polling questions, who tends to be favored. And last time, there was a bias in favor of Republicans, by an assessment of looking at all the polls, and that is exactly what turned out to be the case. People were overly optimistic about Romney, about Republicans doing well. In the end it turned out that just was not factual.



O'REILLY: Okay. That's interesting. Because most people think it's biased left, but this one was biased in favor of Republicans.

Previously:



Fox’s Steve Doocy: “So If The Election Were Held Today, According To The Zip App, Donald Trump Would Win”

Fox's Greta Van Susteren Questions Her Own Networks' Poll Showing Hillary Clinton Beating Trump



Fox's Brit Hume Criticizes Trump's Attempt To Unskew A “Rigged” Poll