Hi! So ... not really (re: hashtag) because Tumblr tags don't work like that; they're very idiosyncratic and journal-based. But the way they do polls is like ... you can get an idea from looking at the very top poll on my Tumblr polls tag.
The content creation ones are things like ... "create a recipe" with a list of possible ingredients, or "build a dinosaur" with a list of dinosaur body parts, and the eventual outcome of the poll is what you end up with, like a dinosaur that's 80% "beak." I don't think I've ever seen anywhere but Tumblr do that.
Re: Can you tell me more?
https://laylainalaska.tumblr.com/tagged/polls
The content creation ones are things like ... "create a recipe" with a list of possible ingredients, or "build a dinosaur" with a list of dinosaur body parts, and the eventual outcome of the poll is what you end up with, like a dinosaur that's 80% "beak." I don't think I've ever seen anywhere but Tumblr do that.