A poll like this should ask the questions both ways around (and/or with multiple phrasings), so you can distinguish guessing (which should come out at 50% corre

A poll like this should ask the questions both ways around (and/or with multiple phrasings), so you can distinguish guessing (which should come out at 50% correct if the question is not biasing people and no-one knows the right answer) vs incorrect knowledge (which will come out <50% whatever the phrasing).