When 99% of the people you try to contact don't respond, doesn't the poll result say more about the type of people who respond to polls than it does about the electorate as a whole? Like, what are we even doing at this point?
Yes, but there still has to be a correlation between likelihood of response and voter intent across political party, race, and region, to get a big effect.
IMO the answer is "yes, there probably is something to non-response bias" in this election
