

The Deputy Prime Minister of Spain Soraya Sáenz de Santamaría was assigned to be the acting president of Catalonia until the December elections. This action dismissed Catalan President Carles Puigdemont and his cabinet, and called for fresh Catalan elections on 21 December 2017. On the same day, Prime Minister Mariano Rajoy of Spain invoked Article 155 of the Constitution of Spain for the first time in history. 10 MPs voted against the declaration and 53 MPs refused to be present during the vote, after the legal counsels of the Catalan Parliament advised that it could not take place as the law on which it was based had been suspended by the Spanish Constitutional Court. The same document was voted for on 27 October by a majority of 70 out of 135 MPs in a plenary session.

On October 10, in the aftermath of the 1 October 2017 Catalan independence referendum, a document declaring Catalonia to be an independent republic was signed by the members of Catalonia's pro-independence parliamentary majority.

The declaration did not receive recognition from the international community. The Catalan declaration of independence ( Catalan: Declaració d'independència de Catalunya Spanish: Declaración de Independencia de Cataluña) was a resolution that was passed by the Parliament of Catalonia on 27 October 2017, which declared the independence of Catalonia from Spain and the founding of an independent Catalan Republic. Unilateral declaration of independence of Catalonia as a sovereign republic from Spain Effectively unenforceable under Article 155 of Spanish Constitutionħ2 of the 135 members of the Parliament of Catalonia
