Mr. Rouhani's supporters also expect his victory, with 57 percent of the vote, to bolster his outreach efforts to the West and the pursuit of more foreign investment to lift Iran's ailing economy. For those who voted for Mr. Rouhani, there was a feeling of tremendous relief that his challenger, the hard-line cleric Ebrahim Raisi, who criticized the nuclear deal with the United States and other Western powers, had lost. "Bye-bye, Raisi," the crowds chanted during the street gatherings. "He faces a difficult task," Fazel Meybodi, a Shiite Muslim cleric from the city of Qum, said of Mr.