Cristina Fernández de Kirchner of the Buenos Aires province, both leaders had their respective wives run for the office: Hilda González de Duhalde for the PJ, and Cristina Kirchner for the Front for Victory. Cristina Kirchner won the election. The presidential election was held on 28 October 2007. With Kirchner leading all the pre-election polls by a wide margin, her challengers focused on forcing her into a ballotage. To win in a single round, a presidential candidate in Argentina needs either more than 45% of the vote, or 40% of the vote and a lead of more than 10 percentage points over the runner-up.
Presidency of Cristina Fernández de Kirchner stymy minor parties and the formation of new ones. Following charges of embezzlement filed by a local attorney, Enrique Piragini, on October 29, Federal Judge Norberto Oyarbide ordered an accounting expert to investigate the origin of the Kirchners’ wealth. Public records show that since their arrival to power in 2003, the declared assets of Cristina and Néstor Kirchner have increased by 572%. A preliminary report on the investigation by the Argentine Anti Corruption Office (OA) established that the official figures provided by the Kirchners "don't stack up". The investigation was suspended by Judge Oyarbide on December 30, though a week