After weeks of excitement and fervor, it is all over. The numbers are in and incumbent Mahmoud Ahmadinejad has won a "landslide" victory in the Iranian presidential elections.

But the very margin of his victory, Iranian news media on Saturday, citing Interior Ministry figures, reported a two-thirds to one-third margin in Ahmadinejad's favor, with almost all votes counted, has left many questioning the authenticity of the "democratic" elections, since the run-up to Friday's vote suggested a tight race between Ahmadinejad and the leading reformist candidate, former prime minister Mir Hossein Mousavi.

On Friday night, Mousavi called a press conference to claim victory and alleged that he was the victim of election irregularities.

Allegations are widespread that foul play and sabotage impacted the final outcome. Some Iranians are asserting that there were insufficient polling stations and shortages of ballot papers in pro-Mousavi neighborhoods, that voters were preventing from casting their ballots by the authorities, and that ominous threats were issued that the regime would lash out if Ahmadinejad were to lose. RELATEDslideshow: Islamic Republic goes to the ballots

The "green" Mousavi campaign network was aware of such dangers ahead of Friday's polling, in which early estimates suggest some 75 percent of the 46.2 million voters participated, and even warned supporters to cast their votes in schools rather than mosques.

But the word from his camp is that it was also hamstrung by government interference in his supporters' Internet communications, and that his representatives were not allowed to monitor the voting in some areas. To their misfortune, it is being charged, they were left outside to watch Ahmadinejad's officials direct proceedings.

There are also reports of Iranians being locked out of polling booths in certain provinces while poorer voters, widely regarded as the incumbent president's largest and most dependable group of supporters, lined up with ease to cast their ballots at local mosques.

News agencies reported that cellphone text messages, used most by young urbanites, Mousavi's constituency, couldn't be sent on Friday. And there were even rumors that pens provided at polling stations were filled with disappearing ink. Supporters of Mousavi and fellow reformist challenger Mahdi Karroubi were urged to bring their own.

Interior Minister Sadeq Mahsouli disputed that there were problems, however, and Supreme Leader Ayatollah Ali Khamenei, who holds ultimate power in Iran, urged voters, as he cast his ballot Friday, "Don't pay attention to the rumors."

Sara Hasani, a young Iranian who led Mousavi's green campaign in her local neighborhood, alleged Saturday that "they (the government) robbed us of Mousavi's victory."

"It is simply not possible that Ahmadinejad is winning with about 70% of the votes," she said.

"They cannot give us hope and take it away from the people. It appears Ahmadinejad has successfully manipulated the campaign scene better than we thought. Our votes are meaningless. It's a cruel joke."

"Deep down I knew Ahmadinejad was promised another four years by the Supreme Leader, but I didn't want to believe it," added a young man who said he had been prevented from voting because the authorities "ran out of ballots."

"Now when I look at Ahmadinejad's behavior throughout his campaign," he went on, "it is obvious that he was already preparing for his next term. His last three weeks, for example, have been filled with diplomatic meetings in Pakistan, Iraq, Afghanistan and Turkey. We all should have known, the dictator is here to stay."

Mousavi favors trying to repair ties to the US and economic liberalization. His supporters said Saturday they fear Ahmadinejad, who publicly clashed with his rival over domestic and international issues in a campaign remarkable for the candidates' personal feuding and the intensity of their respective supporters' street rallies, would now move to unseat reformist figures from positions of influence.