Survey USA is a leftist polling company and mostly wrong in their predictions.
My opinion, don't be a poll wonk, your blood pressure will thank you.
Well, what you said is simply not true. In 2006, the top three polls for senate races were SurveyUSA (off by 1.5%), and only missed ONE race out of 49 called; Mason-Dixon had 14 called, (off by 1.4%), and had one wrong; and Rasmussen called eight and got all eight, with a margin of error of 1.4%.
SurveyUSA is extremely reliable, and this is not good news.