(1)
If a person who is already a member of the House of the People and has taken his seat in such House is chosen a member of the Council of States, his seat in the House of the People shall, on the date on which he is so chosen, become vacant.
(2)
If a person who is already a member of the Council of States and has taken his seat in such Council is chosen a member of the House of the People, his seat in the Council of States shall, on the date on which he is so chosen, become vacant.