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Lisbon Treaty 2008

Referendum on the Twenty-Eighth Amendment of the Constitution Bill 2008 (Lisbon Treaty)

A referendum on a proposal to amend the Constitution to allow Ireland to ratify the Lisbon Treaty was held on 12 June 2008.

The Treaty proposed to amend, but not replace, the two main treaties which govern the EU, namely:

  • the Treaty Establishing the European Community (the EC Treaty);
  • the Treaty on European Union (the Maastricht Treaty).

The Treaty would also change the name of the EC Treaty to the "Treaty on the Functioning of the European Union".

The changes proposed in the Treaty could be divided into two main areas:

  • changes to how the EU is governed
  • changes which affect a range of EU activities.

The proposal was not approved by the people. For further information about the votes cast, see -,1894,en.pdf


For the Lisbon Treaty 2008 referendum information campaign the Referendum Commission developed a dedicated website. This website is currently unavailable, but the text can be viewed on the Archive website.


You can read the report of the Referendum Commission online

Report cover 2008