Much here from an expert!-----Your Definitive Guide to Understanding Polling (and Why Most Polls Are Garbage)

Your Definitive Guide to Understanding Polling (and Why Most Polls Are Garbage)
"On September 1, 2020, The Economist/YouGov released a National Presidential “Poll” [Quotes Added] in which they declare Joe Biden has a monstrous 11 point lead on Donald Trump. 
As a polling nerd, I decided to take a deeper look at it.
...When reviewing polls in 2016, I came across bad poll after bad poll as a result of oversampling problems as well as push-poll lines of questions or questions that are framed in a way to influence the way someone answers. 
For instance, if a polling firm asked a question “Do you agree with Joe Biden’s call for all Americans to unite?”, it doesn’t leave any room for someone saying they disagree with the premise of the question, that is, Joe Biden even having that ability in the first place. 
Another example of a push poll question is “Do you support Donald Trump’s divisive rhetoric?” 
...Polling should ALWAYS be only of Registered Voters. 
Asking a non-registered voter or an ineligible voter their opinion on a voting issue is the equivalent of asking the Queen of England who is she is voting for in the US Presidential election. 
...BUT WAIT! 
There’s more!
Throughout the next couple of months leading up to election day, I will be providing polling analysis here at RedState with some short articles on the front page of the site...Read all!