canvassing
From Longman Business DictionaryRelated topics: Advertising & marketingcanvassingcan‧vas‧sing /ˈkænvəsɪŋ/ noun [uncountable]1MARKETINGthe activity of asking people about something in order to get their opinion or to get informationMembers of the Finance Houses Association should discourage intrusive methods of canvassing. → cold canvassing2the activity of trying to persuade people to support someone or somethingThe election candidates have to learn the art of doorstep canvassing (=visiting people’s houses to get their support).