Poland - 1997 Constitution

Title Article 195
Chapter VIII - Courts and Tribunals (The Constitutional Tribunal)
Article

195

(3) Judges of the Constitutional Tribunal, during their term of office, shall not belong to a political party, a trade union or perform public activities incompatible with the principles of the independence of the courts and judges.

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.