The failure of the media to forecast the results of the 2016 Presidential Election can be summed up in three words, "No Trump Signs."
The failure of the media to connect with the people is simple.
Freedom from fear:
Freedom that your election signs will not be stolen or and destroyed.
Freedom that attached property will not be abused and or defaced.
Freedom that people will not be maligned for their political beliefs.
Maligned means:' ":defame, slander, libel, blacken someone's name/character, smear, vilify."
People will not parade their political opinions if they will be subjected to ridicule, possible property damage and/or physical abuse.
If people will not express their views because of possible negative reactions, there is no way that predictions can be made in regard to elections that can be meaningful.
The Land Of Freedom Of Speech, Love It Or Leave It.