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Approval Needed to Amend Constitution

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Referendums by Country 2024

A referendum is when voters are asked to vote on a 'yes' or 'no' question by a direct vote on a proposal, law, or issue.

The Australian Electoral Commission (AEC) provides independent electoral services for the Australian electorate.

The AEC held a referendum on the Australian Indigenous Voice on October 14, 2023, which asked voters if they approved a change in the Australian Constitution.

The referendum asked Australian voters to vote on a proposal that included giving greater political rights to Indigenous people and recognizing Indigenous people in the Constitution. The referendum included the creation of an advocacy committee to offer advice on policy regarding Indigenous people.

All six Australian states voted 'no' on the referendum.

The most well-known referendum in Ireland is the Northern Ireland Good Friday Agreement, two referendums held in Northern Ireland and the Republic of Ireland.

Voters voted 'yes' on the Northern Ireland Good Friday Agreement, which approved the British-Irish Agreement and allowed an amendment to Ireland's Constitution.

In Switzerland, referendums allow voters to vote on policy. The process in Switzerland for proposing a referendum requires 100,000 signatures, which puts the power in the citizens' hands.

On June 1, 2022, Denmark held a referendum asking voters if they wanted to abolish the opt-out from the EU's Common Security and Defense Policy (CSDP). Denmark's voters supported abolishing the opt-out.

In the United States, twenty-three states and the Virgin Islands allow citizens to vote on referendums, including repealing existing legislation and suggesting new legislation.

US states that allow voters to vote on referendums include Arizona, Arkansas, California, Colorado, Florida, Illinois, Louisiana, Maine, Maryland, Massachusetts, Michigan, Mississippi, Missouri, Montana, Nebraska, Nevada, North Dakota, Ohio, Oklahoma, Oregon, and South Dakota,

Delaware is the only state that doesn't require a popular vote to make changes to the Constitution.

Country
Approval Needed to Amend Constitution
Binding Referendum on Demand
Most Recent Referendum
Referendum Law
Turnout Needed
Additional Details
SwitzerlandYesYes2023YesNone
Signatures of 50,000 voters needed for binding referendum on demand
Mexico2022Yes
ItalyNoYes2022Yes50%
Referendum Law is only to abolish existing law or when it is requested to approve a constitutional c...
HungaryNoYes2022Yes50%
Signatures of 200,000 voters needed for binding referendum on demand
Serbia2022Yes
Denmark2022Yes
In Denmark, after a law has been passed by parliament, one third of the members can demand a referen...
UruguayYes2022Yes
PhilippinesYesYes2021YesNone
Referendum law on initiatives on amending constitution ruled by the Supreme Court as "fatally defect...
Kenya2021
TaiwanYesYes2021YesAt least 25% of registered voters in favor
Signatures of 1.5% of registered voters needed for binding referendum on demand; Referendum approval...
ChileYes2020Yes
New ZealandNo2020Yes
Puerto Rico2020
LiechtensteinYesYes2020Yes50%
Signatures of 1,500 voters needed for binding referendum on demand
RomaniaYesNo2019Yes30%
Moldova2019Yes
According to Article 75 of the Constitution of Moldova, "(1) Problems of utmost gravity or urgency c...
LithuaniaYesNo2019YesAt least 33% of registered voters in favor
Referendum approval is needed to amend constituion only for Amendments to chapters 1 and 14
ColombiaNoYes2018Yes25%
Signatures of 10% of registered voters needed for binding referendum on demand
EcuadorYesYes2018Yes50%
Signatures of 10% of registered voters needed for binding referendum on demand
IrelandYesNo2018YesNone
SloveniaNoYes2018Yes50%
Signatures of 40,000 voters needed for binding referendum on demand
TurkeyNoNo2017YesNone
VenezuelaYes2017Yes
Netherlands2017Yes
Since 1 July 2015, most laws can be subjected to a consultative referendum after their approval by t...
Thailand2016
United KingdomNoNo2016Yes
Bulgaria2016Yes
PolandNoNo2015Yes50%
Greece2015Yes
The Constitution provides for two kinds of referendums: a referendum concerning "passed law" and a r...
SlovakiaNoYes2015Yes50%
Signatures of 350,000 voters needed for binding referendum on demand
Luxembourg2015Yes
Malta2015Yes
There are three types of referendums in Malta: constitutional, consultative and abrogative referendu...
AustriaYesNo2013Yes
Comprehensive change
CroatiaYes2013YesNone
Signatures of 10% of registered voters needed for binding referendum on demand
LatviaYes2012Yes
The Constitution of Latvia prescribes a referendum for five purposes: recalling of the Parliament, a...
IcelandYes2012Yes
Egypt2011
Morocco2011
Hong Kong2010
Portugal2007Yes
The referendum in Portugal is called by the President of Portugal (if they so decide), on a proposal...
Costa Rica2007
Brazil2005Yes
FranceNoNo2005YesNone
Spain2005
Iraq2005
Cyprus2004No
Constitution of Cyprus has no mention of referendum (as of 2013)
SwedenNoNo2003Yes
Czech RepublicNoNo2003NoNone
No referendum on state level (except EU referendum), but on regional and municipal level allowed
EstoniaYesNo2003YesNone
Referendum approval needed to amend constituion are chapters "General Provisions" and "Amendment of ...
Pakistan2002
AustraliaYesNo1999Yes50% +1 of all votes cast nationally and a majority of votes cast within a majority of the original states (4 of 6)
If an amendment affects the parliamentary representation or the limits of one or more states, a majo...
Timor Leste1999
Finland1994Yes
The Constitution of Finland allows only for a non-binding referendum called on by the Parliament. If...
NorwayNoNo1994No
Russia1993
Eritrea1993
CanadaNo1992Yes
Bangladesh1991
Ukraine1991Yes
South KoreaYesNo1987Yes50%
Iran1979
India1975No
The Constitution of India does not have a specific provision for or against referendum
Singapore1962
BelgiumNoNo1950No
United StatesNoNoNo
IndonesiaNoNoNo
GermanyNo
Originally, only some of the Bundesländer (federated states) had provisions for a general binding re...
Saudi ArabiaNoNoNo
MalaysiaNoNoNo
North KoreaNoNoNo
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Which countries have had national referendums?

Since 1980, 141 countries have had national referendums, in which the people directly voted on a policy. Some of these nations are Australia, Brazil, Canada, Iran, Vietnam, and Myanmar.

Frequently Asked Questions

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