Canvassing is the systematic initiation of direct contact with individuals, commonly used during political campaigns. Canvassing can be done for many reasons: political campaigning, grassroots fundraising, community awareness, membership drives, and more. Campaigners knock on doors to contact people personally. Canvassing is used by political parties and issue groups to identify supporters, persuade the undecided, and add voters to the voters list through voter registration, and it is central to get out the vote operations. It is the core element of what political campaigns call the ground game or field.
Organized political canvassing became a central tool of contested election campaigns in Britain, and has remained a core practice performed by thousands of volunteers at each election there, and in many countries with similar political systems.
Canvassing can also refer to a neighborhood canvass performed by law enforcement in the course of an investigation. This is a systematic approach to interviewing residents, merchants, and others who are in the immediate vicinity of a crime and may have useful information.
A modern election canvass may be conducted by a candidate, volunteers, and/or paid canvassers. The canvassers are given lists known as canvass sheets (or access to a canvassing app) or in the UK as reading pads. These are a list of households to be contacted, generated from a voter database. Some campaigns today have replaced paper sheets with tablet or smartphone apps.
The canvasser will try to contact each of the households on their list, and deliver a script containing questions and persuasive messaging provided by the campaign. Almost all election canvassing includes asking how a person plans to vote. Supporters may then be asked themselves to volunteer, or to take a lawn sign. Those who are wavering or undecided may be given a message of persuasion. If foot canvassing, the canvasser may also distribute flyers.
During the canvass, the results will be entered into the voter database. This will update the campaign's list of voters, removing those who have moved or are deceased and adding new residents who may have been found. The data on the questions will be used for further contact, a supporter may be added to a list for get out the vote or fundraising, while a hostile voter might be dropped from future contact.