Why polls can't be trusted

Lots of people these days are “professional” poll takers, because they are given prizes for all the polls they answer.

This could skew polls by at least 2 percentage points…a bad thing in a close race…if anyone is stupid enough to be impacted by the opinions of 1,000 people…

https://www.washingtonpost.com/politics/2020/02/18/bogus-respondents-online-polls-may-be-inflating-approval-trump-obamacare-pew-study-finds/

Professional poll riders