canvasser

from WordNet (r) 3.0 (2006)

canvasser
    n 1: a petitioner who solicits contributions or trade or votes
         [syn: {solicitor}, {canvasser}]
    2: someone who examines votes at an election [syn: {scrutineer},
       {canvasser}]
    3: someone who conducts surveys of public opinion; "a pollster
       conducts public opinion polls"; "a headcounter counts heads"
       [syn: {pollster}, {poll taker}, {headcounter}, {canvasser}]
    4: a person who takes or counts votes

from The Collaborative International Dictionary of English v.0.48

Canvasser \Can"vass*er\, n.
   One who canvasses.
   [1913 Webster]