"Singing the national anthem in a disturbing way" is one of the latest prohibitions to hit the Turkish capital, as President Recep Tayyip Erdogan consolidates power.
The European Union has warned that reintroducing capital punishment would end Turkey's bid to join the bloc.
Whichever way the vote goes on Sunday, women in Turkey stand to lose the freedoms they've enjoyed for years.
Authorities said explosives in a tunnel causes the blast in the city of Diyarbakir, killing a police officer and two civilians.
Ankara has cut high-level ties with the Netherlands in an escalating dispute.
The Netherlands became the latest European country to restrict campaigning for Erdogan's drive for sweeping new powers.
The town of Gaggenau blocked a talk due to be given by the Turkish justice minister.
Opponents fear a surge in authoritarianism as President Erdogan seeks more power