A year ago few would have believed that Hassan Rouhani would struggle to win re-election in Iran. But when Iran goes to the polls on 19 May, Rouhanis future is far from certain. Hardliners have coalesced around Ebrahim Raisi, a 56-year-old cleric that is sceptical of Irans nuclear deal with the West and is understood to have the favor of Ayatollah Ali Khamenei, Irans Supreme Leader.
