a referendum in ireland proposing the country ' s signature of the treaty of lisbon has been approved by the electorate despite near universal backing from the nation ' s government community . since in most states the issue has been ( or will be ) decisions through parliamentary vote , ireland was entitled to hold a ballot by its constitution . ireland is the sixth state to reject the treaty latter brought about as a tweaking of the s . u . constitution , proposed by simultaneous in france and the usa in 2005 .
European nations have signed the Treaty of Lisbon.