Just had someone point out that there is no "How to" thread/tutorial on creating a poll on the forum, so.....
1. Start a new thread/topic in the appropriate forum as you normally would.
2. Give the new thread a title and enter your thoughts/comments about the topic or poll, again, as you normally would.
3. Scroll down the page below the "Create Thread"/"Upload a File"/"Preview" buttons and you should see the "Post a Poll" section.
4. Provide your question, possible answers, select desired options and then click "Create Thread".
Example: