canvasses

英 [ˈkænvəsɪz]

美 [ˈkænvəsɪz]

v. 游说; 拉选票; 调查(民意); 征求(意见); 努力争取支持
n. 细查; 讨论; 检票员，游说者; 劝诱
canvass的第三人称单数和复数

柯林斯词典

VERB 游说;拉选票
If youcanvass fora particular person or political party, you go around an area trying to persuade people to vote for that person or party.
1. I'm canvassing for the Conservative Party...
  我在为保守党拉选票。
VERB 征询,征求(公众意见)
If youcanvasspublic opinion, you find out how people feel about a particular subject.
1. Members of Parliament are spending the weekend canvassing opinion in their constituencies.
  国会议员这个周末要向所在选区的选民征求意见。
2. The poll canvassed the views of almost eighty economists.
  民意调查征询了将近80位经济学家的意见。