SPÖ, ÖVP and the Greens ratified the Treaty of Lisbon in parliament without a referendum, and only FPÖ and the Alliance for the Future of Austria did not sign. But afterwards the SPÖ stated that for future treaties of the European Union referendums should be held to let the people decide like in Ireland (where they had a referendum). Due to SPÖ's position change on the EU not only the two opposition parties are using the possibility of EU-referendums before a ratification as subject now. The ÖVP and the Greens are against any referendums on the Lisbon Treaty, SPÖ demands there should be referendums on future treaties of the European Union, the FPÖ is for a referendum for the Lisbon Treaty, and even want a referendum for EU-Withdrawal. However the BZÖ differs a bit in comparison to the Freedom Party, as they are for a referendum about the Lisbon Treaty but not, for an EU-Withdrawal.