Canvassing p. pr. & vb. n. : of Canvass

Example:


Taxonomy
candidate, election, canvasser, GOTV, volunteer, Labour, free encyclopedia, doors, persuasion, general election, meet the candidate, Labour supporters, Labour voters, knock on, election day, Democratic candidate, an Election, population.

Defination from the web:
Canvassing is the systematic initiation of direct contact with a target group of individuals commonly used during political campaigns. ... The main purpose of canvassing is to perform voter identification - how individuals are planning to vote - rather than to argue with or persuade ...