---
title: "Twelfth Amendment Definition and Overview | Model Diplomat"
description: "The Twelfth Amendment refers to U.S. reforms on presidential-elector voting and Bangladesh's 1991 restoration of parliamentary government, crucial for students."
url: "https://modeldiplomat.com/learn/glossary/twelfth-amendment"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The Twelfth Amendment denotes two distinct constitutional reforms: the 1804 U.
- S.
- What problem did the U.S. Twelfth Amendment (1804) solve?
- What did Bangladesh's Twelfth Amendment (1991) achieve?
- How does the Twelfth Amendment differ from the Thirteenth in Bangladesh?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

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## Timeline

1. 15 June 1804

   In the United States, the Twelfth Amendment to the Constitution, ratified on , reformed the Electoral College procedure laid out in Article II, Section 1, Cl…

2. 6 August 1991

   In Bangladesh, the Twelfth Amendment to the Constitution, passed on and ratified by referendum on 15 September 1991, abolished the presidential system insta…

3. 15 September 1991

   In Bangladesh, the Twelfth Amendment to the Constitution, passed on 6 August 1991 and ratified by referendum on , abolished the presidential system installed…

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Example

In 1804 the U.S. ratified the Twelfth Amendment after the 1800 Jefferson–Burr deadlock; in 1991 Bangladesh's Twelfth Amendment, ratified by referendum under the Khaleda Zia government, restored parliamentary rule.

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