Voters turned out in heavy numbers Friday in Iran’s election. Some lined up before polls opened, and others waited more than three hours under the hot sun to cast their ballots. Reformist Mir Hossein Moussavi and two other candidates are challenging President Mahmoud Ahmadinejad, blamed by many Iranians for the nation’s four-year economic turmoil and known in the West for his vehement rhetoric regarding Iran’s nuclear program and condemnation of Israel. Officials had to extend the polling time from 10 hours to 12 hours to accommodate the massive lines of voters. Kamran Daneshjoo, head of the elections office, called the turnout unprecedented. Moussavi is the main challenger among the three candidates vying to replace Ahmadinejad.