 the youth displayed what appeared to be a handgun. He says it was later determined it was a replica pellet gun. Iran's presidential election is heading to a runoff. CBS News correspondent Liz Palmer is in Tehran. Vote counting continues, but it's already clear neither of the frontrunners has a clear majority, which means a runoff between the reformer, Massoud Pazeshkian, and the hardliner, Saeed Jalili, next Friday. CBS News Brief. I'm Wendy Gillette.