In Mexico, the country’s upcoming presidential election has been thrown into turmoil after the federal Congress voted to impeach one of the leading candidates from his job as mayor of Mexico City The politician — Andres Manuel Lopez Obrador–is now facing arrest over a minor four-year-old infraction. Once an arrest warrant is issued, he could lose his political rights and be barred from running for the presidency. Lopez Obrador has been comfortably leading opinion polls for next year’s elections to replace Mexican President Vincente Fox who can not run again. On Friday over 100,000 of his supporters gathered in Mexico City. Lopez Obrador said 'I am proud to be accused, like those who struggled for justice in the past. Today you are judging me, but don't forget that history will judge both of us.’ He has accused Fox of trying to orchestrate his downfall by having him arrested on these minor charges. All but one legislator from Fox’s party–the National Action Party–voted for impeaching the mayor. Lopez Obrador has been campaigning on a populist platform that has been strongly opposed by the business community. He has called for a more state-supported economy and a renegotiation of free trade pacts.