Soro graduated in Medicine and Surgery at the University of Cagliari and began his career as a primary doctor.

[1] In the early 1970s, Soro started his political experience in the Christian Democracy youth movement and is elected Mayor of Nuoro in 1979, holding the seat for 18 months.

[1] Very close to Beniamino Andreatta, Soro took part in the birth of the Italian People's Party, with which he is elected to the Chamber of Deputies in 1994[2] and 1996.

[3] In 1997, Soro has been appointed the coordinator of the national secretariat of the PPI led by Franco Marini.

[6] He left the office of group leader in 2009, after the 2009 Democratic Party primaries and is replaced by Dario Franceschini,[7] and resigned from the Parliament in 2012, when he was elected member[8] and then president of the Guarantor for the protection of personal data.