Act of June 8, 1992 it requires approval of at least three-fourths of all citizens registered to vote. To amend Chapters 1 through 14 of the Constitution it requires approval of more than half of all registered voters. The decision on the participation in international organizations will be adopted if it has been approved by more than one half of the voters who have participated in the referendum. This exception was adopted on February 25, 2003, just 2.5 months before the referendum on the European Union. The law also lowered the number of Seimas votes needed to announce a referendum from one third to one fourth. However, the requirements for citizen initiated referendum are the same: they need to collect 300,000 signatures of registered voters in three months. Referendum results The successful referendums are marked in light green, while failed ones are in pink. The color denotes which number was used to determine the outcome. Two referendums failed on two counts: they not only did not receive support from more than 50% of all registered voters, but also less than 50% of the voters came to vote. They are deemed not to have taken place. Notes References Nuo 1991 m. iki šiol paskelbtų referendumų rezultatai (Results from Refrenda 1991-Present), Microsoft Word Document, Seimas. Accessed June 17, 2006. Law on Referendum, Seimas, June 4, 2002. No. IX – 929 (as last amended on 17 November 2005 — No X-398). Accessed June 17, 2006. Law on Amendment of Chapters 7, 11, 13, 35, 43, 50, 51, 54, 78 and on Adding Chapter 78(1) to Law on Referendum, Seimas, February 25, 2003, No. IX-1349. Accessed June 17, 2006. Audrius Bačiulis, Referendumas - būdas siekti populiarumo (Referendum - a way to seek popularity), Veidas, July 18, 2002, No. 29. Accessed June 17, 2006.