The six candidates approved to run in Iran's presidential election have made their final pitches to Iranians ahead of Friday's vote. The snap election was called after Ebrahim Raisi died in a helicopter crash last month and candidates have spent much of the campaign encouraging Iranians to participate, amid fears of low turnout. But on the streets of Tehran, our reporters Andrew Hilliar, Karim Yahiaoui and Abdallah Malkawi met people still undecided about taking part.