Nyorai kuenderera mberi kweiyi ndima - Musi wa12 Chikumi 2008, referendamu yakaitwa pamusoro pekubvumidzwa kwechibvumirano cheLisbon. Ikoku kwakakundwa, noruzhinji rwa 46.6% kusvika ku53.4%. Pana 15 October 2009, referendamu yechipiri
yakaitwa pakutenderwa kwayo, iyo yakatenderwa ne67.1% kusvika ku32.9%.