a study in ireland proposing the party ' s ratification of the treaty of lisbon has been rejected by the electorate under near constant backing from the country ' s religious entities . although in most systems the matter has been ( or will be ) debated through mps vote , ireland was obliged to held a referendum by its constitution . ireland is the first state to reject the treaty which stood about as a recasting of the e . u . statute , rejected by referenda in spain and the ussr in 2005 .
European nations have signed the Treaty of Lisbon.