The third, most significant storm-front descending on Democrats is the change in the electorate. In 2008, the Democrats rode an historic wave from a near perfect political storm to their largest turnout advantage in decades. In the final vote, Democrats edged Republicans by 7 points, making the election D+7. New research from Rasmussen and Gallup, however, show that, not only is that advantage gone, but Republicans now have the edge. Both surveys report, for the first time in modern history, that more likely voters identify as Republicans than Democrats. Considering that every poll has found GOP voters more enthusiastic about voting then Democrats, this edge may be decisive. Keep in mind that every poll is built on the assumption that Democrats will have a turnout edge next week. If they don’t have the edge or if the GOP has an advantage? Well, this could be a blowout. And, a lot of down-ballot Dems will be swept under as well.