It’s decision day for presidential hopefuls in Iran. Beginning from May 7, all would-be candidates will have just five days to register for the upcoming election. A number of reformist, principlist and independent hopefuls have already signed up. That’s why some say the next race will be between these three groups. But others hope the next few days could help narrow down who will stand in the ballot. This while some like principlist hopeful Alireza Zakani are still hanging back, weighing their prospects until the last minute.