Many experts are claiming that the margin of victory of incumbent President Mahmoud Ahmadinejad was the result of fraud or manipulation,
but our nationwide public opinion survey of Iranians three weeks before the vote showed Ahmadinejad leading by a more than 2 to 1 margin -- greater than his actual apparent margin of victory in Friday's election.
While Western news reports from Tehran in the days leading up to the voting portrayed an Iranian public enthusiastic about Ahmadinejad's principal opponent, Mir Hossein Mousavi, our scientific sampling from across all 30 of Iran's provinces showed Ahmadinejad well ahead.
Independent and uncensored nationwide surveys of Iran are rare. Typically, preelection polls there are either conducted or monitored by the government and are notoriously untrustworthy. By contrast, the poll undertaken by our nonprofit organizations from May 11 to May 20 was the third in a series over the past two years. Conducted by telephone from a neighboring country, field work was carried out in Farsi by a polling company whose work in the region for ABC News and the BBC has received an Emmy award. Our polling was funded by the Rockefeller Brothers Fund.
The breadth of Ahmadinejad's support was apparent in our preelection survey. During the campaign, for instance, Mousavi emphasized his identity as an Azeri, the second-largest ethnic group in Iran after Persians, to woo Azeri voters. Our survey indicated, though, that Azeris favored Ahmadinejad by 2 to 1 over Mousavi.