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.
YPF provinces subsequently revoked YPF leases representing a fifth of its oil production. Citing Brazilian oil giant Petrobras as an example, the president announced the introduction of a bill on 16 April 2012, for the renationalization of YPF: the national government would purchase a controlling 51% share, with ten provincial governments receiving the remaining 49%. Planning Minister Julio de Vido was appointed to head the Federal intervention, replacing CEO Sebastián Eskenazi. Repsol YPF CEO Antonio Brufau, Spanish Prime Minister Mariano Rajoy, and other Spanish officials objected to the nationalisation, accusing the Argentine government of driving down YPF shares ahead of the