Constitutional Amendments: Processes, Methods, and Global Variations
A constitutional amendment (or constitutional alteration) is a formal modification made to the constitution of a polity, organization, or other entity. These changes are essential for allowing a governing document to evolve alongside the society it serves. Depending on the legal framework, amendments are typically integrated in one of two ways: they are either interwoven directly into the existing text to alter specific sections, or they are appended as supplemental additions known as codicils, which change the frame of government without modifying the original wording.
Because constitutions serve as the supreme law of the land, they generally require a more stringent process for alteration than ordinary legislation. This ensures that fundamental laws are not changed on a whim by a temporary political majority.
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Key Facts
- Stringent Procedures: Most constitutions require special procedures, such as supermajorities or referendums, to pass amendments.
- Diverse Methods: Approval can come from legislatures, the electorate, or a combination of both.
- Frequency Variance: Some nations, like Japan, have seen almost no amendments over decades, while others, like the former state of Alabama (USA), were amended 977 times between 1901 and 2022.
- Referendum Triggers: In some jurisdictions, a referendum to amend the constitution can be triggered by a popular initiative.
Mechanisms for Constitutional Change
Legislative and Public Approval
The path to a constitutional change varies significantly by country. Some nations require a two-step process involving both the government and the people. For example, in Australia and Ireland, all amendments must first pass through the legislature before being submitted to the electorate for approval.
However, the threshold for public approval differs. Ireland requires a simple majority of voters, whereas Australia employs a more complex set of criteria, requiring a majority of voters nationwide as well as a majority of voters in a majority of states. Switzerland utilizes a similar system to Australia.
Special Procedures and Supermajorities
To prevent frequent or unstable changes, many polities implement supermajorities—a requirement for a proportion of votes significantly higher than a simple majority (e.g., two-thirds or three-fourths). In the United States, federal amendments must be adopted by two-thirds of both houses of Congress and ratified by three-fourths of the state legislatures or ratification conventions.
Inadmissible Amendments
Some constitutions contain clauses that prohibit certain changes. A historical example is Article Five of the U.S. Constitution, which originally prohibited amendments affecting the foreign slave trade before 1808. Additionally, any amendment affecting the equal representation of states in the U.S. Senate must be approved by every single state.
Global Comparison of Amendment Methods
The following table summarizes the proposal and approval requirements for various nations.
| Constitution | Proposed By | Approval By | Referendum Required | Majority Type |
|---|---|---|---|---|
| Afghanistan | President | Legislature | No | 2/3 |
| Albania | Legislature (1/5) | Legislature | Yes | 2/3 + >50% |
| Australia | Legislature (1 member) | Both houses of legislature | Yes | Absolute Majority |
| Brazil | President or 1/3 of either house | Both houses of legislature | No | 3/5 |
| India | Parliament | Parliament / State Legislatures | No | Simple or Special Majority |
| Japan | Legislature (2/3) | Both houses of legislature | Yes | 2/3 + >50% |
| United States | 2/3 of both houses | State legislatures/conventions | No | 3/4 of states |
Regional Case Studies
India
India utilizes three distinct paths for amendment: a simple majority of Parliament for administrative changes (like altering state boundaries), a special majority of Parliament (majority of total membership and 2/3 of those present and voting), and a special majority combined with the consent of half of the state legislatures for more fundamental changes.
Turkey
The Turkish constitution, adopted in 1982, provides a unique example of bulk amendment. As of July 2018, it had been amended 21 times, but all 21 changes were passed simultaneously via a single constitutional referendum in 2017. This specific referendum was highly controversial due to its impact on presidential tenure.
Bulgaria
Bulgaria employs a highly specialized procedure for critical changes, such as altering international borders or the form of government. This requires the election of a Great National Assembly consisting of 400 deputies, with amendments passing by a two-thirds majority across three successive readings.
Frequently Asked Questions
What is the difference between an amendment and a codicil?
An amendment is typically woven directly into the existing text of the constitution to modify it. A codicil is a supplemental addition appended to the end of the document, changing the legal framework without altering the original text.
Why are constitutional amendments harder to pass than regular laws?
Constitutions are designed to be stable foundations of government. By requiring supermajorities or referendums, the process prevents frequent changes based on short-term political trends and ensures broad consensus.
Can a population trigger a constitutional change?
Yes, in some jurisdictions, a popular initiative allows the electorate to trigger a referendum to propose or approve amendments to the constitution.
What happens if one house of a legislature rejects an amendment?
This varies by country. In Australia, if one house passes a bill and the other refuses, the Governor-General may still submit the proposed change to a referendum under certain conditions.
Are there limits on what can be amended?
Yes, some constitutions have "inadmissible amendments." For example, the U.S. Constitution requires the approval of every single state for any amendment that would affect the equal representation of states in the Senate.