The PSC was officially founded in 1972. The foundation was the result of the split of the unitary Christian Social Party (PSC-CVP) into the Dutch-speaking Christian People's Party (CVP) and the French-speaking Christian Social Party (PSC), following the increased linguistic tensions after the crisis at the Catholic University of Leuven in 1968. The PSC performed particularly badly in the 1999 general election. This was linked to several scandals, such as the escape of Marc Dutroux and the discovery of dioxine in chickens (the PSC was a coalition partner in the Dehaene government). The decline in votes was also explained by declining adherence to Catholicism. The party was confined to opposition on all levels of government.
The party started a process of internal reform. In 2001, a new charter of principles, the "Charter of Democratic Humanism," was adopted and in 2002 the party adopted a new constitution and a new name, Humanist Democratic Centre. On 17 March 2022, the party changed to its current name and political colors. On 10 October 2022, Virginie Lefrancq, a Brussels MP, announced that she was leaving Les Engagés, feeling politically orphaned.[9]
The party considers itself to be a movement rather than a party, and calls for citizen-led initiatives and more engagement between the public and politicians.[11] The party has dropped all its Christian references and now defines itself as a party working for the "common good";[12] it has subsequently withdrawn from the Christian Democratic European People's Party (EPP) and joined the centrist European Democratic Party (EDP).[10]
On its manifesto, the party supports NATO, the EU, secularism and LGBT rights.[13] Les Engagés supports intensifying awareness and information campaigns on gender and homosexuality, as well as the reimbursement of gynecological and andrological care for trans people.[14]
^Billiet, Jaak; Maddens, Bart; Frognier, André-Paul (2006). "Does Belgium (still) exist? Differences in political culture between Flemings and Walloons". West European Politics. 29 (5): 912–932. doi:10.1080/01402380600968802. S2CID154393064.