canvass (canvasses 3rd person present) (canvassing present participle) (canvassed past tense & past participle )
1 verb If you canvass for a particular person or political party, you go around an area trying to persuade people to vote for that person or party.
I'm canvassing for the Conservative Party... V for n
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canvasser (canvassers plural) n-count
...a Conservative canvasser.
2 verb If you canvass public opinion, you find out how people feel about a particular subject.
Members of Parliament are spending the weekend canvassing opinion in their constituencies. V n