I’ve used polls in community posts a few times, and the performance is spotty, and seemingly getting worse.
The total number of votes is reported, but the number of votes and percentage for each choice doesn’t show up. Sometimes it works on my phone using a Chrome browser when it doesn’t work on Firefox on my computer. Sometimes it doesn’t work on either. Sometimes it works for a while, then stops.
I suppose the work-around would be to ask my subscribers to reply to the post with their vote, but that is asking them to do extra work, and also takes away the anonymity of the poll.