Editing Constitution (section)

==== Methods of amending ====
{| class="wikitable"
|+Procedures for amending national constitutions
!Approval by
![[Supermajority]] needed
!Countries
|-
| rowspan="9" |Legislature (unicameral, joint session or lower house only)
|>50% + >50% after an election
|Iceland, Sweden
|-
|>50% + 60% after an election
|Estonia, Greece
|-
|60% + >50% after an election
|Greece
|-
|60%
|France, Senegal, Slovakia
|-
|{{frac|2|3}}
|Afghanistan, Angola, Armenia, Austria, Bahrain, Bangladesh, Bulgaria, Cambodia, Djibouti, Ecuador, Honduras, Laos, Libya, Malawi, North Korea, North Macedonia, Norway, Palestine, Portugal, Qatar, Samoa, São Tomé and Príncipe, Serbia, Singapore, Slovenia, Solomon Islands, Turkmenistan, Tuvalu, United Arab Emirates, Uzbekistan, Vanuatu, Vietnam, Yemen
|-
|>50% + |{{frac|2|3}} after an election
|Ukraine
|-
|2/3 + |{{frac|2|3}} after an election
|Belgium
|-
|3/4
|Bulgaria, Solomon Islands (in some cases)
|-
|4/5
|Estonia, Portugal (in the five years following the last amendment)
|-
| rowspan="9" |Legislature + referendum
|>50% + >50%
|Djibouti, Ecuador, Venezuela
|-
|>50% before and after an election + >50%
|Denmark
|-
|3/5 + >50%
|Russia, Turkey
|-
|2/3 + >50%
|Albania, Andorra, Armenia (some amendments), Egypt, Slovenia, Tunisia, Uganda, Yemen (some amendments), Zambia
|-
|2/3 + >60%
|Seychelles
|-
|3/4 + >50%
|Romania
|-
|3/4 + >50% of eligible voters
|Taiwan
|-
|{{frac|2|3}} + {{frac|2|3}}
|Namibia, Sierra Leone
|-
|75% + 75%
|Fiji
|-
| rowspan="2" |Legislature + sub-national legislatures
|{{frac|2|3}} + >50%
|Mexico
|-
|{{frac|2|3}} + {{frac|2|3}}
|Ethiopia
|-
| rowspan="4" |Lower house + upper house
||{{frac|2|3}} + >50%
|Poland, Bosnia and Herzegovina
|-
||{{frac|2|3}} + {{frac|2|3}}
|Bahrain, Germany, India, Italy, Jordan, Namibia, Netherlands, Pakistan, Somalia, Zimbabwe
|-
|60% + 60%
|Brazil, Czech Republic
|-
|75% + 75%
|Kazakhstan
|-
|Lower house + upper house + joint session
|>50% + >50% + {{frac|2|3}}
|Gabon
|-
|Either house of legislature + joint session
|{{frac|2|3}} + {{frac|2|3}}
|Haiti
|-
| rowspan="8" |Lower house + upper house + referendum
|>50% + >50% + >50%
|Algeria, France, Ireland, Italy
|-
|>50% + >50% + >50% (electors in majority of states/cantons)+ >50% (electors)
|Australia, Switzerland
|-
| 60% + 60% + >50% (optional)
|Spain (in most cases)<ref>"The Spanish Constitution and its reform" ''[https://blog.congreso.es/la-constitucion-y-su-reforma-ordinaria blog.congreso.es]''. Retrieved 28 August 2023.</ref>
|-
|{{frac|2|3}} + {{frac|2|3}} + >50%
|Japan, Romania, Zimbabwe (some cases)
|-
|{{frac|2|3}} + {{frac|2|3}} before and after an election + >50%
|Spain (in some cases)
|-
|{{frac|2|3}} + >50% + |{{frac|2|3}}
|Antigua and Barbuda
|-
|{{frac|2|3}} + >50% + >50%
|Poland (some cases)<ref>{{Cite web |title=The Constitution of the Republic of Poland |url=https://www.sejm.gov.pl/prawo/konst/angielski/kon1.htm |access-date=2022-05-25 |website=www.sejm.gov.pl}}</ref><ref>{{Cite web |title=Konstytucja Rzeczypospolitej Polskiej |url=https://www.sejm.gov.pl/prawo/konst/polski/kon1.htm |access-date=2022-05-25 |website=www.sejm.gov.pl}}</ref>
|-
|75% + 75% + >50%
|Madagascar
|-
| rowspan="5" |Lower house + upper house + sub-national legislatures
|12/12
|Canada (in some cases)
|-
|>50% + >50% + {{frac|2|3}}
|Canada (in most cases)
|-
||{{frac|2|3}} + {{frac|2|3}} + >50%
|India (in some cases)
|-
||{{frac|2|3}} + {{frac|2|3}} + 75%
|United States
|-
|{{frac|2|3}} + {{frac|2|3}} + 50%
|Ethiopia<ref>"Constitution of the Federal Democratic Republic of Ethiopia". ''Article 105,'' ''[https://www.refworld.org/docid/3ae6b5a84.html 21 August 1995]''. Federal Democratic Republic of Ethiopia. Retrieved 28 August 2023.</ref>
|-
|Referendum
|>50%
|Estonia, Gabon, Kazakhstan, Malawi, Palau, Philippines, Senegal, Serbia (in some cases), Tajikistan, Turkmenistan, Uzbekistan
|-
| rowspan="2" |Sub-national legislatures
||{{frac|2|3}}
|Russia
|-
|75%
|United States
|-
| rowspan="2" |Constitutional convention
|
|Argentina
|-
|{{frac|2|3}}
|Bulgaria (some amendments)
|}
''Some countries are listed under more than one method because alternative procedures may be used.''