Polling is 20th century
I think it far more sophisticated than a conscience physical poll. Internet preferences, shopping preferences, exercise patterns, what one eats.
A person living on a vegan diet and reading that lifestyle information would naturally be a target of (example only) Bernie Sanders.
A person reading hunting and buying camo would fall into an algorithm that would target them for (example only) Trump.
I found it curious that HRC had a 65% approval before the election and it was in the 30s by Nov 2016.
Nothing changed.
The disinformation campaign focused on the Clinton Foundation for example.
I am more aware of negative Trump info than say --- thethe ---
I am more aware of immigrant success stories than thethe