Why were the polling results and predictions for the US 2016 presidential election so inaccurate/wrong?
Why were the prediction polls in the U.S. Presidential election so wrong?
Why doesn't FiveThirtyEight open source their election prediction model? What are the alternative statistical sampling methods could have been adopted to improve the poll prediction accuracy in the US elections? Polling missed the call on Brexit; How accurate are current polling methods and could we see similar forecasting flubs with the Presidential election? Did Allan Litchman Predict the 2000 Election Incorrectly? Which pollster has been the most accurate for presidential polling in the 2016 election cycle? Were the voting machines rigged, given that all Republicans did better than the polls’ forecast? If all US States assigned electoral votes proportionally how different would the US Presidential Election results be? Which polls were the most consistently accurate during the 2016 campaign? Why don't third party candidates have a realistic chance in U.S. Presidential elections? Why are there no exit polls? Is it possible that my mistaken expectations of the 2016 Presidential Election were negatively influenced by the liberal Quora Echo Chamber? What counts as a landslide in US Presidential elections? Why doesn't the US use the popular vote in their general election and presidential election systems? Why did American voters narrow it down to Hillary and Trump in the presidential election? How are Trump, his campaign or his surrogates reacting to the 538 forecast of 83.4% likelihood of a Clinton win? Will these two instincts change the poll predictions of a Clinton victory? What would the 2016 Presidential Election results look like if electoral votes were awarded proportionally? Is it a fact to say that thousands of people from California's votes in the Presidential election did not count? Does the use of the Electoral College mean US Presidential elections are a "hoax"?  What do American voters value more in presidential elections? The past record of the candidate or the promises made by him? How bad is the outcome of the US 2016 presidential election for science? What is the method of presidential election in USA? Despite the strong right wing sentiment in Indian media nowadays, why is it not reflected in the election results? What happens if presidential candidates cannot get the required amount of electoral votes? Why do national polls (USA) for president always show Democrat ahead of Republican candidate, even in years when Republicans win? Why is popular voting required, if US Presidential election results are decided on basis of electoral votes? What's at least one reason that you've decided NOT to vote for one major candidate versus the other in the 2016 United States presidential election? Why don't presidential candidates choose early voting? How and why did the October 2015 Democratic Presidential debate affect the polls? Why did Reagan defeat Carter in a landslide in the 1980 U.S. presidential election?