They have taken the most obscure pollster like Harris and Zogby and bunched it all together. It is a mirage. Because Obama will ot lose WI when he won by a large margin there or MI given the obvious demographics in places like Detroit and the promixty to IL.
That's why Poblano's 538 is a lot better in it's analysis. http://www.fivethirtyeight.com/
I love her/his work.