Puigdemont will reveal this Thursday from France if he is running as a candidate for 12M. Citizens will challenge Puigemont's candidacy for failing to comply with the Electoral Law: "He does not reside in Catalonia" The conference will take place at the Elna City Hall on Thursday, March 21 at seven in the afternoon, a week and a day after the president of the Generalitat, Pere Aragonès, announced the early elections in Catalonia.

Puiggemont has chosen the symbolism of Elna, in North Catalonia - a territory in the south of France with historical and linguistic ties with Catalonia - as the setting for the announcement.