If you find that you made a mistake in creating your poll, you will have to delete the entire thread, then recreate the poll from scratch. For example, I left off the "Poll Stop" UBB code once, meaning there was no button to click for voting. Kinda sorta lost a little luster with that one. Problem is you can't go back into that very post and edit the code. All you can do is close the thread, make it sticky or delete it altogether.
You can still edit individual posts in that thread, except for the one post actually creating the poll itself.
-------------------- "To absent friends. In memory...... still bright" - John Sheridan, 'Sleeping In Light'