"Ahmadinejad and his pals" weren't the only ones running the election and counting the votes. To quote the Guardian (which like everyone else was hoping that Mousavi would win): "In this election moreover, there were two separate governmental election monitors in addition to observers from each camp to prevent mass voter fraud."

I don't think it is nearly so cut-and-dried as the media currently portray it. Like most everyone else outside of Iran I was hoping that Mousavi would win the election but there's a very real and strong possibility that Ahmadinejad won the election fair and square on a pro-religious platform. His heavy-handed response to protesters seems a little excessive (by our western standards) but seems inline with other crackdowns in Iran over the years. So I'm not convinced this is necessarily proof that the election was rigged. If however, they do uncover evidence of election rigging and he is tossed out, I'd be delighted. But to date, the facts don't necessarily support this.

See this Guardian article for some more info: http://www.guardian.co.uk/commentisfree/2009/jun/13/iranian-election/.

Actually its not clear at all that the election was rigged - despite the claims of the reformist loser. See this Guardian article for more details: http://www.guardian.co.uk/commentisfree/2009/jun/13/iranian-election/