Q: What are you going to do with this data?
A: Mostly nothing. After the poll closes, I usually review the results, think about them, and then make a post giving my own answer, as well as addressing any topics that came up in the comments.
I don't do any quantitative tabulation, publishing, or anything like that.
That said, I think it's possible to find the results of the poll using the Mastodon API, so if you don't want people to know your answer, don't provide it.