Some interesting internals in this writeup of the NBC/Wall Street Journal poll by John Harwood. The data on white noncollege women are stunning. As I've noted before, serious defection from the GOP among this group would make a severe dent in their coalition.
"Among white college graduates, a group Republicans carried by nine points in 2014 mid-term elections, Republicans now trail by 15 points. Among white women without college degrees, a group Republicans carried by 10 points in 2014, Republicans now trail by five points."