Corominas has worked as a lawyer for more than ten years. Corominas contested the 1991 local elections as a Convergence and Unionelectoral alliance candidate in Castellar del Vallès and was elected. He was re-elected at the 1995, 1999 and 2003 local elections. He was mayor of Castellar del Vallès between 1992 and 2004 and vice-president of Vallès Occidental County Council from 1996 to 2003. Corominas was vice-president of Fons Català de Cooperació al Desenvolupament and a national councillor of the Associació Catalana de Municipis. He has also been vice-president of the Board of Trustees of the Fundación Ramon Trias Fargas. Corominas was secretary of the Democratic Convergence of Catalonia from 2000 to 2004. He has been a member of the national executive committees of the CDC and Convergence and Union. Corominas contested the 2003 regional election as a CiU candidate in the Province of Barcelona and was elected to the Parliament of Catalonia. He was re-elected at the 2006, 2010, 2012 and 2015 regional elections. Corominas was elected Second Vice-President of the Parliament of Catalonia in September 2008, replacing Ramon Camp i Batalla. He was elected First Vice-President of the Parliament of Catalonia in December 2010. In December 2012 he was elected Second Vice-President of the Parliament of Catalonia. He was elected First Vice-President of the Parliament of Catalonia in October 2015. In July 2017 he became president of the Junts pel Sí group in parliament, replacing Jordi Turull.
Catalan independence crisis
In June 2017President of CataloniaCarles Puigdemont announced that a referendum on Catalan independence would be held on 1 October 2017. The Catalan Parliament passed legislation on 6 September 2017 authorising the referendum which would be binding and based on a simple majority without a minimum threshold. The following day Constitutional Court of Spain suspended the legislation, blocking the referendum. The Spanish government put into effect Operation Anubis in order to disrupt the organisation of the referendum and arrested Catalan government officials. Despite this the referendum went ahead though it was boycotted by unionists and turnout was only 43%. 92% of those who voted supported independence. Around 900 people were injured as the Spanish police used violence to try to prevent voting in the referendum. On 27 October 2017 the Catalan Parliament declared independence in a vote boycotted by opposition MPs. Almost immediately the Senate of Spain invoked article 155 of the constitution, dismissing Puigdemont and the Catalan government and imposing direct rule on Catalonia. The following day Spanish Prime MinisterMariano Rajoydissolved the Catalan Parliament and called for fresh regional elections on 21 December 2017. On 30 October 2017 Spanish Attorney GeneralJosé Manuel Maza laid charges of rebellion, sedition and misuse of public funds at the Supreme Court against Corominas and five other members of the Board of the Parliament of Catalonia. Corominas was charged despite not being a member of the board at the time of the declaration of independence. The charges carried maximum sentences of 30, 15 and 6 years in prison respectively. Corominas and the other members of the board appeared before Supreme Court judge Pablo Llarena on 9 November 2017. Nuet was released without any precautionary measures but the other five had to pay bail, surrender their passport and present themselves at a court weekly. The bail bonds were paid by the Catalan National Assembly. After a four-month judicial investigation into the referendum and declaration of independence Supreme Court judge Pablo Llarena issued a 70-page ruling on 23 March 2018 in which he ordered that 25 of the 28 Catalan politicians and activists under investigation be tried for rebellion, embezzlement or disobedience. Corominas was charged with disobeying an order of the Constitutional Court. A pre-trial hearing commenced on 18 December 2018 at the Supreme Court at which defence lawyers argued that the court was not competent to hear charges of rebellion or disobedience and that it should be heard at the High Court of Justice of Catalonia. On 27 December 2018 the Supreme Court ruled that, although they were competent to hear all the charges, the six defendants charged only with disobedience would be tried at the High Court of Justice of Catalonia.
Personal life
Corominas is married and has two daughters. He was a basketball player and has coached a women's basketball team in Castellar.
