No, the poll starter does not have that option, nor do regular topic starters. However, and this is where your terminology is a little confusing-- moderators do have that ability, but the title of moderator belongs to a limited number of cousins on the Forums. Mods for each board can be found at the top of the board listing. For example, at the top of this board is:
Testing. 1, 2, 3... (Moderator: Mysterious Benefactor).
Dom, our Global Mod, unfortunately had to take a personal leave from the boards.