No, it looks like the poll is live and available for as long as people have access to the presentation. So it could be used asynchronously too. I tried one out, and it was pretty intuitive. Polls and quizzes live under elements.

At the moment of the post, I was learning about Canva's accessibility features that I didn't realize existed (but really matter.) I also hadn't explored the polling option yet, and I'm really excited to play with that!

Update: the battle is getting heated. Are they colleagues, true rivals, or siblings? #vste24

I'm definitely jumping into the one today!