From what I am understanding, the response rate this year for polling is 2%, it has been around 50% in previous elections.
That in itself would invalidate the results.
Richard Baris of People’s Pundit is having the same problem. He’s one of the good guys and he can’t get red voters to respond. Listen to him bemoan the response rate starting at about 30m 45s =>
https://www.youtube.com/watch?v=ZdSy3Ele764