The order of succession

Art. 57

1. The Crown of Spain shall inherited by the successors of H.M. Juan Carlos I de Borbon, the legitimate heir of the historic dynasty. Succession to the throne shall follow the regular order of primogeniture and representation, in the following order of precedence: the earlier shall precede the more distant; within the same degree, the male shall precede the female; and for the same sex, the older shall precede the younger.  
2. The Crown Prince, from the time of his birth or the event conferring this position upon him, shall hold the title of Prince of Asturias and the other titles traditionally held by the heir to the Crown of Spain.  
3. ​Should all the lines designated by law become extinct, the Cortes Generales shall provide for the succession to the Crown in the manner most suited to the interests of Spain.  
4. ​Those persons with a right of succession to the Throne who marry against the express prohibition of the King and the Cortes Generales, shall be excluded from succession to the Crown, as shall their descendants. 
5. Abdications and renunciations and any doubt concerning a fact or the law that may arise in connection with the succession to the Crown shall be resolved by an organic law.