Sardinia is one of the 29 constituencies () represented in the Chamber of Deputies, the lower house of the Italian parliament. The constituency currently elects 17 deputies. Its boundaries correspond to those of the Italian region of Sardinia. The electoral system uses a parallel voting system, which act as a mixed system, with 37% of seats allocated using a first-past-the-post electoral system and 61% using a proportional method, with one round of voting.
The constituency was first established by the Mattarella law on 4 August 1993 and later confirmed by the Calderoli law on 21 December 2005 and by the Rosato law on 3 November 2017.
Members of the Parliament 2018–present + Single-member districtsDistrictDeputyPartyN.NameMap 01 Cagliari Andrea Murathen Andrea Frailissee 2019 Italian by-elections Five Star Movement (Mura)Democratic Party (Frailis) 02 Nuoro Mara LapiaFive Star Movementthen Democratic Centre 03 Carbonia Pino CabrasFive Star Movementthen Alternativa 04 Sassari Mario PerantoniFive Star Movement 05 Olbia Five Star Movementthen Italia Viva 06 Oristano Five Star Movement
+ Multi-member districtsDistrictPartyDeputyN.NameMap01Sardinia 01 M5S Emanuela Corda M5S M5S PD Romina Mura FI Ugo Cappellacci Lega FdI Salvatore Deidda02Sardinia 02 M5S M5S Paola Deiana PD FI
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