Русско-англо-русский юридический словарь

A commander-in-chief is the person or body that exercises supreme operational command and control of a nation's military forces or significant elements of those forces. In the latter case, the force element is those forces within a particular region, or associated by function. As a practical term, it refers to military competencies that reside in a nation-state's executive leadership—either a head of state, a head of government, a minister of defence, a national cabinet, or some other collegial body. (Wikipedia)

Head of government is a generic term used for either the highest or second highest official in the executive branch of a sovereign state, a federated state, or a self-governing colony who often presides over a cabinet. (Wikipedia)

A cabinet is a body of high-ranking state officials, typically consisting of the top leaders of the executive branch, usually called ministers.

The functions of a cabinet are varied: in some countries it is a collegial decision-making body with collective responsibility, while in others it may function as a purely advisory body to a decision making head of state or head of government. In some countries, the cabinet is named "Council of Ministers" or "Government". These countries may differ in the way that the cabinet is used or established. (Wikipedia)

A political campaign is an organized effort which seeks to influence the decision making process 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. (Wikipedia)