Yes, you can set up a poll.
When you’re typing in your Reply box, go to the little icon that looks like a “gear,” and click on that. It’s the icon that is all of the way on the end and to the right of all of the other choices, and next to the smiley-faced icon.
It’s called the “options” icon.
Once you click on that gear icon, you get a Menu selection, and one of them says, “Build a Poll.” Click on that one, and you can then set up your Poll however you like.