Article 86

The functions of the President of the Republic, in all cases in which he or she is unable to perform them, shall be exercised by the President of the Senate. In the case of permanent incapacity, death or resignation of the President of the Republic, the President of the Chamber of Deputies shall call the election of a new President of the Republic within fifteen days, except in the case of the longer term which applies when the Houses are dissolved or if less than three months remain before the end of their term.