Néstor Kirchner fanned by the political weight of Buenos Aires province (the most populous in Argentina, with almost 40 percent of the national vote), and continued through the 2005 midterm elections. Without consensus in the PJ for a candidate for senator in the Buenos Aires province, both leaders had their wives run for office: Hilda González de Duhalde for the PJ and Cristina Fernández de Kirchner for the Front for Victory, which contested the election as a different party. Cristina Kirchner won the election. As in 2003, the elections were defined by Peronist factions; the opposition parties could not put up a
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