Not the clearest article, as it says Ireland is the only country to hold a referendum (on the so-called Treaty of Lisbon). At the article’s end it notes nine referendums on the EU constitution. There’s a difference that matters between the two?
This is a treaty.
The EU Constitution was defeated. Nine referendums were held on the constitution by various countries, some more than once.
Since the Constitution was defeated by referendum vote of the people, the politicians decided to make the constitution a treaty that needs only approval by the legislative bodies of EU countries.
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