Why display all the fields for "Post a Poll" when I just want to create a new thread? All those fields might confuse some users, there are too much options to look at. Keem it simple and userfriendly for non tech users.
Also, "Post a Poll" seems very confusing for non-tech users. The users don't want to post a poll. they want to make a thread WITH a poll. Perhaps rephrase it to "Attach a Poll" or "Add a Poll" ?