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to try to get support for a candidate or political party in a particular area; to ask many people in an area for their opinions หาเสียง เรียกคะแนนให้, สำรวจความคิดเห็น
Prime Minister and Democrat leader Abhisit Vejjajiva yesterday went into the Pheu Thai stronghold of Phayao province to canvass for votes.
Most of the campaign's canvassing will be performed by volunteers, says the candidate's spokesman.
Because the dead man may have been homeless, police will canvass the downtown area where people sleep under bridges and will visit shelters.