"The CBS News 2017 Alabama poll is conducted by YouGov using a representative sample of 1,067 registered voters in Alabama between November 28–December 1, 2017. The margin of error based upon the entire sample is 3.8 percent and for likely voters is 4.8 percent."
This is a poll done by a standard polling company. You seem to be mischaracterising how they are done and, two comments up the chain, you attack even professional polls based on their performance in the last presidential election, where they were very accurate in predicting the popular vote.
This is a poll done by a standard polling company. You seem to be mischaracterising how they are done and, two comments up the chain, you attack even professional polls based on their performance in the last presidential election, where they were very accurate in predicting the popular vote.