Gallup screwed up in 2010 and 2012. They called for a much wider Republican House victory in the former than what actually occurred, and they polled a Mitt Romney victory in the latter. That put them on a blacklist of sorts with some polling analysts. And while I am just one person, I want to say that I trust Gallup’s presidential approval numbers as much as any mainstream pollster at this point.
Why? The main question when looking at a poll is whether or not the numbers accurately reflect the current state of the country. Methodology is important, but without accuracy, methodology is rather useless. In Gallup’s case, solid technique has led to Gallup’s approval track being reliable since last October. [cont.]
Harry Enten, The Guardian
See also: Gallup presidential tracking