http://online.wsj.com/public/resources/documents/info-presapp0605-31.html
Three times in his presidency, his approval dropped 25 points or more in a span of less than a year. And twice, he rebounded from those drops by shooting up in popularity by 30 points or more in less than six months! Is this best explained by simply surmising that Gallup was still getting the kinks out of their methodology, or was there something real being observed? And if the latter, how does the body public change its mind so dramatically about a president five times in a five year period? Certainly you can’t point to anything so whiplash-inducing with any of the presidents who followed him.