canvasser

Noun

• a person who takes or counts votes

• someone who conducts surveys of public opinion
  • a pollster conducts public opinion polls
    
  • a headcounter counts heads
    

• someone who examines votes at an election

• a petitioner who solicits contributions or trade or votes

Related words

• Synonyms: 
  pollster , poll taker , headcounter , scrutineer , solicitor