A political campaign is an organized effort which seeks to influence the decision making progress within a specific group. In democracies, political campaigns often refer to electoral campaigns, by which representatives are chosen or referendums are decided. In modern politics, the most high-profile political campaigns are focused on general elections and candidates for head of state or head of government, often a president or prime minister.

Canvassing, also known as door knocking or phone banking, 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.