Two conservative hardline candidates in Iran’s presidential election have announced they are dropping out of the race, in an effort to unite support among hardline voters headed to the polls on Friday. Tehran mayor Alireza Zakani announced his withdrawal on Thursday, a day after arch-conservative politician Amirhossein Ghazizadeh Hashemi posted on X that he was no longer running for president. This leaves four contenders in the election to replace Ebrahim Raisi, who died in a helicopter crash in May. The election campaign formally ended on Thursday morning. Ghazizadeh Hashemi was one of Raisi’…