Order of succession (transfer of authority in monarchies, states and institutions)

Core principles and common variants

Different systems define succession in distinct ways. Hereditary succession usually follows family descent according to rules such as primogeniture (preference for the eldest child), male-preference primogeniture, or absolute primogeniture (no gender priority). Elective systems allow a defined body to choose a successor. Other mechanisms include appointment by a governing council, designation by the incumbent, or succession by seniority. Many contemporary constitutions and charters set out a formal line of succession to avoid confusion in times of crisis.

Typical triggers and procedural steps

• Common events that trigger succession include death, resignation, abdication, incapacitation, removal from office, or disqualification.
• Procedural responses can involve automatic succession, a period of regency, a formal proclamation, or an election or confirmation process.
• Contingencies such as minority (when the heir is too young), contested claims, or rival claimants often require legal or parliamentary resolution.

Many countries and organizations maintain an official list—often called a "line of succession"—that ranks eligible individuals. Such lists are periodically updated to reflect births, deaths, changes in marriage status, naturalization, or legal changes. Clear, codified rules reduce the risk of instability by providing a predictable method for transferring authority.

Historically, succession practices have shaped the course of states and dynasties. In some periods, unclear succession rules provoked disputes or wars of succession. Over time, legal reforms and constitutional conventions have increasingly formalized procedures, blending tradition with statutory law and political practice.

For further reading and comparative examples of how different systems manage succession, see a general treatment of the order of succession. Understanding the distinctions between hereditary, elective, and appointed succession helps explain why some transitions are routine while others are legally or politically contested.