It’s a quiet Thursday in Tehran. Campaigning and electioneering is forbidden on election eve, and the crowds are gone, but the tension is palpable. Here and there are still visible people wearing the ubiquitous green armbands that signal support for former Prime Minister Mousavi. Everyone, but everyone, has only one thing on their minds, and rumors are flying, gossip is exchanged, and the latest news—true or not—is passed from mouth to mouth and via cell phone and text messages. Outside the gigantic, concrete edifice of the Interior Ministry, which has responsibility for counting the votes, a pair of young women wearing green smiled as we passed each other. It’s inside that building, overlooked by a huge portrait of Ayatollah Khomeini, where many Iranians worry that the vote will be stolen.