Hey there, I took a look at this using the NVDA screen reader for windows.
I was table to navigate to a poll in a topic, advance through the list of options, and cast my vote with the space button. Further tabbing took me to the “vote” button located at the bottom of the poll, and pressing enter saved my vote.
Do you have any information from your users who use assistive technology on what the hurdles were that they encountered to prevent them from voting?
We’d love to dive further into this but would appreciate a better underatanding.