canvasses , canvassing , canvassed
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 Republican Party.
我在为共和党拉选票。
If you canvass public opinion, you find out how people feel about a particular subject.
Members of Congress are spending the weekend canvassing opinion in their constituencies.
国会议员将在这个周末向各自选区的选民征求意见。