Since he became mayor of Tehran two years ago, Mahmoud Ahmadi-Nejad has not taken a holiday. He drives an old Peugeot, prays regularly and lives a simple life.
On Friday Mr Ahmadi-Nejad, 49, takes on a leading figure of Iran's Islamic republic, Akbar Hashemi Rafsanjani, 71, in a run-off ballot to decide the next president.
