Spain - 1978 Constitution

Title Article 127
Article

127

(1) Judges and magistrates as well as public prosecutors, whilst actively in office, may not hold other public office nor belong to political parties or unions.

Categories - Extra-parliamentary party (Members' compatibility)
Source Gisbert H. Flanz ed. 2004. Constitutions of the Countries of the World. Dobbs Ferry, New York: Oceana Publications.