It was founded in 1974 by various groups opposing the Estado Novo, in the context of the Carnation Revolution.

[citation needed] The party seeks the restoration of the Portuguese monarchy.

The party is known for its dispute with Duarte Pio, Duke of Braganza, with party leader, Nuno da Câmara Pereira, supporting a rival claimant, Pedro José, Duke of Loulé.

In 2009, under the leadership of Câmara Pereira, the party decided to run in the elections of that year on its own, gaining no seats.

The party had not been elected on its own since the dissolution of the Democratic Alliance, of which it was a part, and seldom reached 0.5% of votes.