
The process of amending a constitution varies across different countries and political systems. In the United States, Article Five of the Constitution outlines the procedure for making changes to the document. This involves a two-thirds majority vote in both the House of Representatives and the Senate, or a constitutional convention called for by two-thirds of state legislatures. Once an amendment is proposed, it must be ratified by three-quarters of state legislatures or conventions in three-quarters of states. This process has been used to add 27 amendments to the US Constitution. Other countries, such as California and New York, have their own unique processes for constitutional amendments, which may involve legislative votes, constitutional conventions, voter initiatives, or referendums.
| Characteristics | Values |
|---|---|
| Country | United States |
| Amendment Process | A two-thirds majority vote in both the House of Representatives and the Senate |
| A constitutional convention called for by two-thirds of state legislatures | |
| A majority vote of state delegations at a national convention called by Congress at the request of two-thirds of the states | |
| A majority vote of voters in a referendum | |
| A majority vote of voters in a general election | |
| A majority vote of voters in a special election | |
| Number of Amendments | 27 |
| Amendment Example | The Twenty-seventh Amendment was certified in 1992, 202 years after it was first submitted for ratification |
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What You'll Learn

Two-thirds majority in the House of Representatives and the Senate
Article Five of the United States Constitution outlines the procedure for amending the Constitution. It requires a two-thirds majority vote in both the House of Representatives and the Senate to propose an amendment. This process, known as the congressional method, has been the exclusive route for proposing amendments thus far.
The congressional method, as outlined in Article Five, empowers Congress to initiate the amendment process by securing a two-thirds majority vote in both chambers. This vote signifies that Congress deems it necessary to propose amendments to the Constitution. The President does not play a constitutional role in this process, and the joint resolution is forwarded directly to the National Archives and Records Administration (NARA) for processing and publication.
The two-thirds majority requirement in both houses of Congress serves as a critical safeguard, ensuring that any proposed amendment has substantial support within the legislative branch. It also underscores the importance of consensus-building and negotiation among legislators to achieve the necessary supermajority. This high threshold helps prevent hasty or partisan changes to the Constitution, promoting stability and continuity in the nation's foundational document.
Once an amendment proposal secures the required two-thirds majority in the House of Representatives and the Senate, the process moves forward. The proposed amendment is then sent to the states for ratification, where it must be ratified by either three-quarters of state legislatures or ratifying conventions in three-quarters of the states. This step ensures that a substantial majority of states agree with the proposed change to the Constitution.
The two-thirds majority vote in the House of Representatives and the Senate is just the first step in the amendment process outlined in Article Five. It is followed by the ratification process, which involves the states and ensures that any changes to the Constitution reflect the will of a significant majority of the country. This comprehensive procedure safeguards the integrity of the Constitution while allowing for necessary amendments to be made when supported by a broad consensus.
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Ratification by three-quarters of the states
Article V of the United States Constitution outlines the procedure for amending the Constitution. The process consists of two steps: proposing an amendment and subsequent ratification.
An amendment can be proposed by Congress with a two-thirds majority vote in both the House of Representatives and the Senate. Alternatively, a constitutional convention can be called for by two-thirds of the State legislatures.
Once an amendment is proposed, it must be ratified by three-quarters of the states, or 38 out of 50 states, to become part of the Constitution. This can be done through the state legislatures or ratifying conventions in three-quarters of the states. The vote of each state, regardless of its population or time in the Union, carries equal weight in the ratification process.
The ratification process is administered by the Archivist of the United States, who heads the National Archives and Records Administration (NARA). Once the required number of authenticated ratification documents is received, the Archivist certifies that the amendment is valid and has become part of the Constitution. This certification is published in the Federal Register and serves as official notice to Congress and the nation.
The process of amending the Constitution ensures that any changes made reflect the will of a significant portion of the country. By requiring ratification by three-quarters of the states, it guarantees that a broad consensus is reached before the Constitution is altered.
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A majority vote of state delegations at a national convention
Article V of the United States Constitution outlines the procedure for amending the Constitution. Amendments to the Constitution may be proposed by Congress with a two-thirds majority vote in both the House of Representatives and the Senate. Alternatively, a constitutional convention can be called for by two-thirds of the state legislatures. This second method has never been used.
The first method, involving a two-thirds majority vote in both the House and the Senate, has been used for all 27 amendments to the Constitution. Once an amendment is proposed by Congress, it is sent to the states for ratification.
For an amendment to become part of the Constitution, it must be ratified by three-quarters of the states (38 out of 50 states). This can be done through the state legislatures or ratifying conventions in three-quarters of the states. The vote of each state carries equal weight, regardless of its population or time in the Union.
The process of amending the Constitution is stringent, and the involvement of state delegations in a national convention is a crucial aspect of this process. While this specific method has not been utilised, the provision for it underlines the importance of state representation and input in constitutional amendments.
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Voter initiative
The voter initiative process is a form of direct democracy that allows citizens to propose and vote on changes to the state constitution. It gives voters the power to bypass the state legislature and propose amendments directly. This process empowers citizens to have a more direct impact on the laws and policies that govern them.
The voter initiative process can vary slightly from state to state. For example, in New York, there are two methods of proposing amendments: the legislative method and the convention method. Both methods require approval by a majority of voters in a referendum, but the legislative method also includes additional steps such as publishing the proposed amendment for three months and obtaining approval from the members of each of the two houses.
The voter initiative process is an important tool for citizens to have a direct say in shaping the laws that govern them. It provides a mechanism for citizens to propose and enact changes to the state constitution, bypassing the traditional legislative process. This process ensures that the citizens' voices are heard and allows for a more direct form of democracy.
However, it is important to note that the voter initiative process is just one method of proposing amendments to a state constitution. In some states, the process may be more complex, requiring multiple steps and the involvement of the state legislature or a constitutional convention. Nonetheless, the voter initiative remains a powerful tool for citizens to initiate changes to their state's fundamental laws.
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A referendum
In some countries, such as the United States, the process of amending the constitution is outlined in Article V of the Constitution. To propose an amendment, there are two methods: the first method requires a two-thirds majority vote in both the House of Representatives and the Senate (Congress). The second method involves a constitutional convention called for by two-thirds of the state legislatures, which has never been used. Once an amendment is proposed, it must be ratified. This can be done through the legislatures of three-quarters of the states or by ratifying conventions in three-quarters of the states, which has only been used once in history for the Twenty-first Amendment.
In the state of California, there are three methods to propose an amendment to the state constitution: by the legislature, by constitutional convention, or by voter initiative. For an amendment to be approved, it must receive a majority vote from voters. The legislative method requires a two-thirds supermajority in both houses, while the convention method involves submitting the question of calling a convention to the voters, and if approved, delegates are elected to participate in the convention.
Similarly, in New York, there are two methods to propose amendments: the legislative method and the convention method. For the legislative method, the proposal must be published for three months and then approved by an absolute majority in both houses, followed by another approval in the succeeding term. Finally, it must be submitted to the people and approved by a simple majority. The convention method involves calling a constitutional convention through a referendum.
While a referendum is an effective way to amend a constitution, it is important to note that the specific procedures and requirements may vary depending on the jurisdiction.
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Frequently asked questions
A two-thirds majority vote in both the House of Representatives and the Senate is required to amend the US Constitution. This is also known as a supermajority.
The process of amending the Constitution is called "ratification". After Congress proposes an amendment, it is sent to the states for ratification. A three-fourths majority of the states (38 out of 50) must ratify the amendment for it to become part of the Constitution.
Yes, there are two other ways to amend the Constitution. One way is through a constitutional convention called for by two-thirds of the state legislatures. Another way is through a voter initiative, where voters can propose an amendment through a petition.





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