sentences:  The proposal was approved by 69.2% of voters with a turnout of 75.6%.The referendum campaign included television debates in which Constantine himself took part on the monarchist side, whilst those debating in favour of a republic included Marios Ploritis, Leonidas Kyrkos, Phaedon Vegleris, George Koumandos, Alexandros Panagoulis and Costas Simitis, who later (from 1996 to 2004) served as Prime Minister of Greece.Political parties abstained from taking part in the referendum campaign, with the television debates confined to ordinary citizens who represented one side or the other.