Queen Elizabeth II on the balcony at Buckingham Palace after her coronation in 1953. (Credit: Fox Photos/Hulton Archive/Getty Images)
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Introduction

Succession, or the transition of power from one ruler to the next, hasn’t always been smooth in Great Britain or other monarchies, but it has served as a template for governments around the world. In the United States, the line of presidential succession was established by the Founding Fathers in case a seated president is unable to finish his term in office due to death, disability, or criminal activity.

Since the Norman conquest of England in the 11th century, it was presumed that kings would simply pass the power to rule to their first-born son. This line of succession, known as primogeniture, was also used to determine non-royal heirs to property and wealth.

However, almost from the very beginning, succession to the throne, first in England and now in the United Kingdom (which includes England, Scotland, Wales and Northern Ireland), was rarely so straightforward.

Indeed, factors such as war, political turmoil and the inability of some monarchs to produce a suitable male heir have resulted in confusion and tumultuous transfers in power.

And now, under the United Kingdom’s current constitutional monarchy form of government, the protocol for succession to the throne is more complicated still—and is overseen by Parliament, the legislative branch of the national government.

Beginning with the first Norman King of England, William I or William the Conqueror, the title of ruling monarch was passed from the king to his first-born son, usually at the time of the former’s death.

Despite the fact that this straightforward transition didn’t always come to pass—for a variety of reasons—the process remained in place, although not as a written law per se, for some seven hundred years.

As England evolved into a democratic form of government—specifically a constitutional monarchy—in the late 1600s, the country’s leaders decided to codify the succession of power.

The result was a law known as the Act of Settlement of 1701. This landmark legislation established that, at the time of King William III’s death, the title of ruling monarch would be passed on to queen-in-waiting Sophia of Hanover and the “heirs of her body.” English common law at the time defined heirs essentially by male-preference primogeniture, meaning that male heirs would have the first right to the throne over their sisters.

And, with the Church of England well established as the country’s national church, the law also prohibited Roman Catholics from inheriting the throne. Heirs who chose to marry Roman Catholics were also removed from the line of succession.

The Founding Fathers of the United States entertained the idea of bestowing the title of “King” to Revolutionary War hero George Washington. However, they soon thought better of establishing a monarchy in the young country and instead eventually created the office of President. Washington was ultimately elected as the country’s first President shortly thereafter.

The Founding Fathers did learn one thing from their former colonial masters in England, and that is that having an established line of succession in place for the nation’s leader is vital to maintaining a stable government that continues to operate even if the head of state is no longer able to serve in office, due to illness, death or, perhaps, a criminal conviction.

Although the succession process of the United States is far different from that established in the Act of Settlement, it is essentially modeled after the English law.

As established first in the U.S. Constitution, should the elected President no longer be able to serve, the power of office is passed to the Vice President. Since Congress’ passage of the Presidential Succession Act of 1947, if the Vice President is unable to serve, the line of succession moves to the Speaker of the House of Representatives, followed by the President pro tempore of the Senate.

The next in line of succession are the heads of the 15 federal departments who make up the Cabinet of the United States, the first being the Secretary of State.

Despite its obvious discrimination against female heirs to the throne as well as adherents to the Roman Catholic religion, the Act of Settlement of 1701 officially remained the law of the land in the United Kingdom until 2013, with Parliament’s passage of the Succession to the Crown Act.

Seeking to eliminate the inherent discrimination of the original law, and working in consultation with the current monarch, Queen Elizabeth II and her heirs, Parliamentary representatives of the four nations that make up the United Kingdom agreed to modify the line of succession laws to change the male-preference primogeniture system to an absolute primogeniture system (first-born heir, regardless of gender).

The Succession to the Crown Act of 2013 also established that an heir could still inherit the throne even if they married a Roman Catholic and no longer required heirs outside of the first six in the line of succession to seek the ruling monarch’s permission to marry.

The new law officially took effect in 2015. However, the ban against heirs who are Roman Catholic from inheriting the throne remains in place, at least officially.

Similar modifications to the laws regarding line of succession in other constitutional monarchies around the world were made much earlier.

Belgium, for example, has used absolute primogeniture since 1991, and the system has been in place in the Kingdom of the Netherlands and in Sweden for decades. Spain, however, still uses a system of male-preference primogeniture.

Succession. The Home of the Royal Family.
Succession to the Crown Act 2013. Legislation.Gov.UK.
Monarch vs. president: What’s the better succession system? National Constitution Center.
The Presidential order of succession. Washington Post.
Succession to the throne. Royal House of the Netherlands.