With a view to facilitating the exercise of the right to vote for persons in custody of the courts, prisons, in institutions for special treatment, or detained in arrest rooms, the community electoral authority, and the city council in Vienna, shall establish for the local area of detention one or more special precincts. Moreover, the provisions for the exercise of the right to vote for patients cared for in convalescence and nursery homes (§ 72) shall be applied accordingly.