This could possibly be true if the poll was true. But considering the pollster is literally on the Clinton payroll, and created a poll that assumes democrats will turn out in greater numbers for Hillary than they did for Obama in 2008...well, the whole thing comes crumbling down.
It would appear that the purpose of this is to fool as many as possible into thinking that Hillary really is leading by a huge margin so that they can fake the vote count to show her winning by a hairline margin and say that she won by a smaller than expected margin. Half the population is stupid enough to believe it.