I read this explanation in another interview given prior to the election and was filled with hope, also note how standard polling treated “likely voters” as another reason for their erroneous findings.
Cahaly: I saw a lot of commentators refer to this say that they believe that the “shy voter” worked both ways [shy Trump and shy Hillary voters]. That is not what we experienced. In fact, what we experienced was a pattern that was so unnatural we knew there had to be something to it.
I grew up in the South and everybody is very polite down here, and if you want to find out the truth on a hot topic, you can’t just ask the question directly. So, the neighbor is part of the mechanism to get that real answer. In the 11 battle ground states, and 3 non-battleground, there was a significant drop-off between the ballot test question [which candidate you support] and the neighbors’ question [which candidate you believe most of your neighbors support]. The neighbors question result showed a similar result in each state: Hillary dropped [relative to the ballot test question] and Trump comes up across every demographic, every geography. Hillary’s drop was between 3 and 11 percent while Trump’s increase was between 3 and 7 percent. This pattern existed everywhere from Pennsylvania to Nevada to Utah to Georgia, and it was a constant.