Yesterday, we highlighted Hillary's growing "Millennial Problem" pointing out that her support among young voters seemingly collapsed at the same time she took her 9/11 "stumble" off the sidewalk (see: "Hillary's Growing "Millennial Problem" Forces A Reset"). In fact, the collapse is reflected in the Real Clear Politics average of national polls, which shows Clinton's lead has now been reduced to the smallest margin since the DNC. But, according to the latest polling data from the USC Dornsife/Los Angeles Times daily tracking poll, Millennial voters aren't the only demographic hurting Clinton. First, the overall daily poll, which tracks 3,000 U.S....