The alliance was led by Francisco Sá Carneiro and Freitas do Amaral, and won the 1979 and 1980 legislative elections, which led to Sá Carneiro becoming Prime Minister of Portugal, but lost the presidential election of 1980 to the independent candidate António Ramalho Eanes.

After the death of Sá Carneiro on 4 December 1980, the coalition was unable to find a leader with his charisma.

Francisco Pinto Balsemão, the incoming PSD leader, became Prime Minister, but was unable to consolidate the support enjoyed by his predecessor.

The name was revived for a similar alliance between the PSD, CDS-PP, and PPM ahead of the 2024 legislative election.

In December 2023, Luís Montenegro and Nuno Melo announced a coalition for the 2024 legislative and European Parliament elections, including the Social Democratic Party (PPD/PSD), the CDS – People's Party (CDS–PP) and some independent politicians under the name Democratic Alliance (AD).