The European Parliament election of 1989 took place on 18 June 1989.
Christian Democracy was the largest party in Sardinia. Mario Melis (Sardinian Action Party) was re-elected to the European Parliament in the Islands constituency, thanks to an alliance with several regionalist parties notably including the Valdostan Union.
Results
Source: Ministry of the Interior
References
European Parliament election, 1989 (Sardinia) Wikipedia(Text) CC BY-SA