What if our polls got hacked...Not to be disparaging of pollsters.. that is a tough job in my opinion..BUT

[Metaphorical]

5. Is it possible? Yes. Is it likely? No.

Online polls are worthless, because there is no real way to secure them so that a person can only respond once (indeed, a common spoofing technique is to create bulk email accounts, register with them then capture any multi-factor authentication with bots tied to those accounts. More and more, cell-phone polls are going directly to spam, often without people even seeing them. Indeed, if my adult kids are any indication, they have mostly disabled their phones except for known calls, and use texting.

This means that surveys are tending to catch either older people with landlines (becoming rarer and rarer), or in-person interviews at malls (when was the last time you were in a mall?). It's not terribly surprising that the accuracy of such polls is becoming so bad - pollsters are, even with the best of intentions, increasingly polling a smaller and smaller slice of the electorate, one that general skews hard right.

As to hacking that data? Why bother? It's already skewed to the right, and there's always a chance that someone would have stored the data and checked it to make sure it hasn't been compromised.

The less reputable firms use push-polling to skew the outcome in a certain direction (and to subtly (or not so subtly) pressure the caller in certain ways).