Since the start of 2026, constitutions worldwide have been shifting in real time through amendments, referendums, and rewrites, proving that even the most entrenched laws never stand still.
HeinOnline’s World Constitutions Illustrated has continued to expand, adding new and updated constitutional material from across the globe. From Mexico’s amendment reducing the working day to Barbados refining its republican constitutional order, alongside a draft constitution in Kazakhstan, these developments highlight legal, political, and social change in motion.
What’s New So Far in 2026
- Constitutional updates from 20 countries
- 55 newly added titles
- Ongoing monthly updates across jurisdictions worldwide
These additions strengthen what is already the most comprehensive resource of its kind, combining current and historical constitutions with amending laws, consolidated texts, and key secondary materials.
Key Themes in This Update
Several patterns emerge across this latest round of updates:
- Active constitutional reform
Countries like Mexico, Nicaragua, and Barbados continue to revise foundational legal frameworks.
- Improved research clarity through consolidation
Updated consolidated texts in Brazil, Luxembourg, and Peru make it easier to track how constitutions evolve over time.
- Expanded language access
New translations and multilingual versions broaden accessibility for comparative researchers.
- Emerging developments to watch
Kazakhstan’s draft constitution offers insight into a live reform process.
Highlights from Selected Countries
Mexico
Mexico’s March amendment addressing the reduction of the working day marks a significant development in labor policy. While the decree is already in force, the actual reduction is phased, decreasing by two hours annually starting January 1, 2027. Researchers can now access both the amending law and a fully updated consolidated constitution reflecting this change.
Brazil
Constitutional Amendment No. 138/2025 modified the Brazilian Constitution to allow public professors to accumulate their teaching position with any other public position, provided there is schedule compatibility. Also, multiple consolidated versions of the Constitution of 1988 across languages provide valuable tools for comparative and international research.
Kazakhstan
A newly added Draft Constitution (2026) offers rare visibility into an active constitutional reform process, alongside the current 1995 Constitution in updated form. A new 2026 Constitution was adopted following a national referendum on March 15, where it received approximately 87% support. The new framework is set to take full effect on July 1.
Nicaragua
A series of 2026 amendments affecting multiple constitutional provisions highlights ongoing structural changes within the country’s legal framework. Key amendments ratified in January include the elimination of dual citizenship (whereby Nicaraguans lose their nationality upon acquiring another) and the extension of the presidential term to six years.
Barbados
The Constitution (Amendment) Act, 2026-3, passed in February, refined the republican framework by introducing anti-defection provisions.
Full List of Updates
Below is a comprehensive overview of recent additions by country.
Barbados
The Constitution of 1966 has been amended by the Constitution (Amendment) Act, 2026-3, now available from the Official Gazette.
Brazil
Brazil’s 1988 Constitution has been updated through Constitutional Amendment No. 138 (2025), affecting Article 37 and rules on dual employment.
Newly added:
- Amendment No. 138 in Portuguese from official sources
- Consolidated text updated to 2025 in Portuguese from official sources
- Prior consolidated versions in English and Spanish from the Federal Supreme Court
Estonia
New consolidated texts of the 1992 Constitution are now available in Ukrainian and Russian, reflecting different amendment stages. We have added the consolidated texts from the Publications of the Official Gazette.
Honduras
An updated version of the Constitution of 1982, as amended to 2020, in Spanish has been added from the Judicial Power (CEDIJ).
Hungary
We now include the English translations of key amending laws from 2013 and 2025 from the Helsinki Committee.
Kazakhstan
The Draft Constitution of 2026 is now available in both Kazakh and Russian from the Constitutional Reform Commission. We also include the consolidated text of the Constitution of 1995, as amended to 2022, in English from the Presidency.
Liechtenstein
The 1921 Constitution has been updated with a 2024 amendment in German from the State Law Journal. We also now include the consolidated text, as amended to 2024 [in force 1 January 2026], in English and German from the Government of Liechtenstein.
Luxembourg
Consolidated versions of the 1868 Constitution, as amended to 2023, are now available in German and Letzebuergesch from the Ministry of State.
Malawi
Amendments to the 1994 Constitution (Act No. 4 of 2023) are now included from the Government, along with our own updated English translation of the consolidated text.
Malta
The Constitution of 1964 has been updated with Act No. XXXIX of 2025, available in Maltese and English from the Gazette of the Government of Malta / Parliament.
Mexico
We have added the Amendment of 3 March 2026 regarding labor reform in Spanish from the Official Gazette. Also now available:
- Fully updated consolidated constitution in Spanish from official sources
- Comprehensive list of amendments by article (1920–2026) from the Chamber of Deputies
New Zealand
New additions include updated statutory acts central to constitutional governance, such as:
- District Court Act (2016, updated 2026)
- Defense Act (1990, updated 2025)
- Treaty of Waitangi Act (1975, updated 2026)
- Ombudsmen Act (1975, updated 2026)
Nicaragua
Multiple 2026 amendments affecting Articles 23, 25, 118, 125, 132, 159, and 160 are now available. We now include the following texts in Spanish from the Official Gazette.
Peru
The 1993 Constitution, as amended to 2024 [Law No. 32189 of 11 December 2024], has been added in Spanish from the Government of Peru.
Solomon Islands
The 1978 Constitution, as amended to 2023, is now available in consolidated form, provided by the Pacific Islands Legal Information Institute.
Tanzania
The 1977 Constitution, as amended to 2005, is now available in Swahili from the Law Reform Commission.
Tonga
The 1875 Constitution has been updated with the 2025 (Amendment) (No. 1) Act, available in English and Tongan from the Government site.
Trinidad and Tobago
The 1976 Constitution has been updated through Act No. 6 of 2025. We include the text of the amending law from Parliament.
United States of America
The 2024 Supplement to the Constitution of the United States: Analysis and Interpretation has been added.
Zambia
The 1991 Constitution has been updated through Act No. 13 of 2025. We have added the amending law from the Government Printer.
How to Explore These Updates in HeinOnline
Within World Constitutions Illustrated, researchers can:
- Compare historical and current constitutional texts across jurisdictions
- Use consolidated versions to track how amendments reshape legal frameworks
- Analyze amending laws alongside full texts for deeper legal insight
- Access materials in multiple languages for comparative research
Looking Ahead
Constitutional change is constant, and this update is only a snapshot of what is evolving globally. As reforms continue and new materials become available, World Constitutions Illustrated will remain an essential resource for tracking these developments as they happen.
For help searching or navigating World Constitutions Illustrated, check out our LibGuide!
Stay tuned for future updates as constitutional law continues to evolve worldwide. We will continue to provide constitutional content news right here on the HeinOnline Blog. Be sure to subscribe to receive notifications when new posts are published.
