Lad, make a new thread, and before you click on "Submit New Thread", look at the box right above it, which gives you the option to create a "voting booth."
You have to check the little box, where it says: Yes! post a poll. And there's another box under it, where you can choose how many options in replying you want people to give. For example, if you want them to vote only "Yes" or "No", choose 2. Don't worry, you'll be able to change your mind before you actually post the poll.
Click on "Submit New Thread", and on the next page, you'll be able to give your poll a title, and write the answers you want people to vote for.
You can test posting a poll in Testing Area. I did a few days ago.