28/04/2006 (Agence Europe) - 57% of Finns support the idea of holding a referendum on the European Constitution and 23% to opposition in favour of ratification by the Parliament, according to a survey carried out on 20 April by TNS Gallup for Sunnuntaisuomalainen. In Finland, the left-wing parties tend to be in favour of a referendum, whilst the conservative party is less disposed to this idea.