Gibraltar Constitution Order 2006
The Gibraltar Constitution Order 2006 was taken to a referendum in Gibraltar on 30 November 2006. A coalition of groups opposing the proposal held that a majority of 60% should be required to give effect to a new Constitution, quoting other instances, but the political parties held that the result should be decided by a simple majority in favour of the new constitution.
Source: Wikipedia — Gibraltar Constitution Order 2006 (CC BY-SA 4.0)