The Northern Ireland Assembly voted on Tuesday 20 October, by 47-19, in favour of Britain holding a referendum on the Lisbon Treaty, and calling on "those parties aspiring to form the incoming Government of the United Kingdom to give an unequivocal commitment to hold, within a twelve month period from assuming office in 2010, a binding referendum on the Lisbon Treaty that is unconditional and unrelated to how other member states choose to vote, and the result of which will not be held in abeyance pending a further referendum on the subject."