One of Iran’s wealthiest and most powerful men, a former right-hand man to the father of the revolution, Ayatollah Ruhollah Khomeini, Mr. Rafsanjani was an outspoken critic of President Mahmoud Ahmadinejad during the campaign and a supporter of the opposition candidate, Mir Hussein Moussavi.

“I see the country’s political elite more divided than anytime in the Islamic Republic’s 30-year history,” said Karim Sadjadpour, a political analyst with the Carnegie Endowment for International Peace. “Rafsanjani, one of the republic’s founding fathers, the man who made Khameini Supreme Leader, is now in the opposition.”

He supports greater opening to the West, privatizing parts of the economy, and granting more power to civil elected institutions. His view is opposite of those in power now who support a stronger religious establishment and have done little to modernize the stagnant economy.

Iran's former president, Ali Akbar Hashemi Rafsanjani, in Tehran in April.