You can’t use weighting to correct a fundamentally biased sample. Don’t you remember 2016 when pollsters predicted Hillary would win? Trump voters were intentionally not giving their true opinion (or not answering the questions).
It’s the same now, with Biden voters. Trump voters were embarrassed in 2016 but Biden voters are embarrassed now. So they don’t show up in polls.
The polls in 2016 were largely on target. Clinton won the popular vote by roughly the predicted margin and the few key swing states that lost her the race had results that were largely within the margin of error. Lots of people took 2016 as an indication that polling is no longer good. That’s the wrong lesson to learn from 2016; it just doesn’t match the facts.
You can’t use weighting to correct a fundamentally biased sample. Don’t you remember 2016 when pollsters predicted Hillary would win? Trump voters were intentionally not giving their true opinion (or not answering the questions).
It’s the same now, with Biden voters. Trump voters were embarrassed in 2016 but Biden voters are embarrassed now. So they don’t show up in polls.
The polls in 2016 were largely on target. Clinton won the popular vote by roughly the predicted margin and the few key swing states that lost her the race had results that were largely within the margin of error. Lots of people took 2016 as an indication that polling is no longer good. That’s the wrong lesson to learn from 2016; it just doesn’t match the facts.