From FiveThirtyEight.com:

Like most Americans, there are few things I would like to see more than Mahmoud Ahmadinejad, Iran's hateful President, to be voted out of office. Elections in thuggish, authoritarian states like Iran need be treated with the utmost skepticism and scrutiny. I can't say I have any real degree of confidence in the official results, which showed Ahmadinejad winning with some 62 percent of the vote.