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Politician and lawyer from Ávila, Prime Minister of Spain between 1976 and 1981 for the Union of the Democratic Centre (UCD). He led the institutional transition from the legal framework of Francoism to parliamentary democracy, facilitating dialogue between opposing factions and shaping the foundational consensus of the new constitutional regime.

A labor lawyer and political leader from Seville, he served as Secretary-General of the Spanish Socialist Workers' Party (PSOE) between 1974 and 1997. He led the main parliamentary opposition force during the constituent period, promoting the programmatic moderation of the left and pacts with centrist forces.

Asturian journalist and politician, general secretary of the Communist Party of Spain (PCE) between 1960 and 1982. A leading proponent of Eurocommunism and the policy of national reconciliation, he accepted the constitutional flag and the parliamentary monarchy in exchange for democratic legalization and the institutional stability of the state.

Head of State proclaimed King of Spain in November 1975. He played a decisive arbitral role by driving political reform from within the existing legal framework, appointing Adolfo Suárez to lead the institutional dismantling of the previous regime, and supporting the consensus that culminated in the 1978 Constitution and parliamentary monarchy.

Professor of Political Law, diplomat, and founder of Alianza Popular (AP). As a drafter of the 1978 Constitution, he channeled the conservative and reformist sensibilities of late Francoism toward democratic agreement and respect for the new parliamentary legality.

Barcelona lawyer and Catalanist parliamentary leader, spokesperson for the Catalan Minority group in the Congress of Deputies during the Constituent Legislature. As one of the seven constitutional drafters, he was essential in structuring the model of regional autonomy and brokering pacts between peripheral nationalisms and the central government.

Legal philosopher, jurist from Madrid, and PSOE deputy for Valladolid in the 1977 Cortes, later President of the Congress of Deputies. He represented social democracy on the drafting committee of the 1978 Constitution, advocating for the formulation of fundamental rights and civil liberties.

A jurist and permanent councillor of the Council of State, and UCD deputy in the Constituent Cortes, he served as one of the drafters of the 1978 Constitution, playing a decisive role in parliamentary negotiations and in the technical formulation of the parliamentary monarchy, bicameralism, and the foral system.

Jurist and politician from Zaragoza, constitutional drafter for the Union of the Democratic Centre (UCD) and director-general in the Transition governments. As the primary author of the initial drafts of the Constitution, he worked continuously to bridge technical differences between opposing positions.

Barcelona-born professor of constitutional law and deputy for the Unified Socialist Party of Catalonia (PSUC) within the communist group. As a drafter of the 1978 Constitution, he facilitated convergence between the ideals of the transformative left and the principles of social and decentralized constitutionalism.

Diplomat and parliamentary counsel from Cádiz, deputy for the Union of the Democratic Centre and constitutional framer. A key figure in the discreet mediation of the final agreements on education, Church-State relations, and the organization of public powers during the final constituent phase.