charlie dag g, d'agata, cbs, london. >> egypt's first free presidential election is headed for a runoff, voters will choose between the muslim brotherhood and a veteran of hosni mubarek's ousted regime, as elizabeth palmer reports, some are pessimistic for the potential of change either way. >> for the first time ever this past week, millions of egyptians went to the polls believing this simple act could make a difference. >> by bringing to power a president truly chosen by the people. >> the activist aiman nour is not one of them. >> elect agnew president will not bring down the system. >> the system is egypt's ruling military government. which critics accuse of serious and ongoing human rights violations. less than a month ago, for example, soldiers shot and beat protesters demonstrating because their presidential candidate had been disqualified. >> 350 of them were eventually dragged off to jail. >> amr sarhan was among them. a barber, he was the main bread winner for this large family and it took him days to discover what had happened to him and where he is now being held. >> he is a broken man, says his brother, at the military police headquarters he was first sprayed with sewage water and then ele