The Collaborative International Dictionary of English v.0.48:

Poller \Poll"er\ (p[=o]l"[~e]r), n. [From Poll]
   One who polls; specifically:
   (a) One who polls or lops trees.
   (b) One who polls or cuts hair; a barber. [R.]
   (c) One who extorts or plunders. [Obs.] --Bacon.
   (d) One who registers voters, or one who enters his name as a
       voter.
       [1913 Webster]