"Is something on the order of 1964's election what we are cruising toward?"
No.
Do you think the current trend toward Hillary will reverse in the fall? If so, why?
A review of RCP’s average of polls since December of last year shows three periods where Clinton enjoyed a sizable lead over Trump, before her current sizable lead.
And each of those sizable Clinton leads evaporated some three months later with Clinton and Trump in a virtual tie.
If this current and fourth significant Clinton lead follows suit, the poll numbers will reflect a much tighter race close to Election Day, about three months from now.
It’s important to note, of course, that Trump has never realized his own significant, long-term lead in the polls – Clinton will manage to surge ahead with Trump always catching up, leading for a few days or a week, only to fall behind Clinton again.