canvass

US /ˈkæn.vəs/
UK /ˈkæn.vəs/
1.

cuộc vận động

to try to get political support or votes, especially by visiting all the houses in an area:

:
I've been out canvassing for the Labor Party every evening this week.
1.

cuộc vận động

the act of trying to discover information or opinions by asking people:

:
A canvass of council members showed that the proposal would not pass.