 Now, millions of people have been voting in Iran's presidential election. The choice is between a tightly controlled list of four candidates, close to the supreme leader, Ayatollah Ali Khamenei. The former heart surgeon, Massoud Pazeshkian, is the only reformist on the ballot, and he's previously criticised Iran's morality police. It's all taking place following the death of Ebrahim Raisi, who was killed in a helicopter crash last month. The government has called for people to come out and vote in the midst of a record low turnout.