In January 2011, after a struggle with Gavino Sale, president of iRS, the faction led by former leader Ornella Demuru, including iRS founding members Frantziscu Sanna and Franciscu Sedda, decided to leave the party and launch the Republican Constituent Assembly (Sa Costituente Repubricana).

[2][3] In February the new party took the name Project Republic of Sardinia (ProgReS) and Bobore Bussa was elected as provisional leader.

[6] At the party's first congress in August 2011, Bussa was replaced as secretary by Salvatore Acampora, while Omar Onnis was elected president.

[7][8] In July 2012 Demuru and Sedda left the party over disagreements with the new leadership and the rise of Michela Murgia, a well-known writer.

The congress also accepted a proposal to appoint two presidents, one male and one female: Sandro Ghiani and Federica Serra.

In July 2021, during the party's sixth congress, Sollai was re-elected secretary and Sarah Poddighe was appointed president.