NEW : Official campaigning by the 8 approved presidential candidates will start on Friday . The first debate is scheduled for Sunday, October 19 at 9:00pm ET / 6:00pm PT in Las Vegas. Former President Akbar Hashemi Rafsanjani is also among those disqualified . CNN 's Laura Smith-Spark , Reza Sayah , Tara Kangarloo and Saad Abedine contributed to this report . Iran 's Guardian Council decides who can stand in the elections on June 14 .
NEW : Official campaigning by the 8 approved presidential candidates will start on Friday . The first debate is scheduled for Sunday, October 19 at 9:00pm ET / 6:00pm PT in Las Vegas. Former President Akbar Hashemi Rafsanjani is also among those disqualified . Iran 's Guardian Council decides who can stand in the elections on June 14 .