The Marquette Poll has been accurate in predicting election results - period.
Walker has been vetted vetted vetted vetted. He’s probably the cleanest politician in America.
No, their polls three months out it have always veered leftward. It is true that they may often tone down the bias in their last poll before the election just to preserve a false record of accuracy. However this poll, like all of the other academic political polls in Wisconsin taken before very the end of the campaign, is meant solely to affect the outcome and not predict it.