I’ve always felt the primary shortcoming of polls that can never be fully mitigated is measuring the likelihood that person will actually vote on voting day.
If you call me up and ask what flavor of ice cream I want next Saturday I can give you an answer. But when Saturday comes, do I actually feel strongly enough about that ice cream flavor that I’m willing to get dressed, get in my car, drive, park, walk in, stand in line, order and wait for the ice cream?
I think when push comes to shove, there are going to be more people willing to actually go vote for Harris than Trump on voting day.