The examples I gave in Denmark and Ireland were of real re-runs of ballots organised by the state where the outcome was changed. Beyond the treaties of Nice, Lisbon and Maastricht I could have also mentioned examples in France and the Netherlands where the pro-EU lobby had a second bite of the democratic cherry by being able to make amendments to treaty proposals before organising a second ballot relatively close to the first. This is not something that usually happens after a referendum, which is why people link the EU with “keep voting until you get the right answer”, which I personally think is profoundly anti-democratic.