First inauguration of Dilma Rousseff as him – the Workers' Party. The inauguration marked the formal culmination of the Presidential transition of Dilma Rousseff that began when she won the Brazilian presidential election on October 31, 2010, and became the President-elect. The results were certified by the Supreme Electoral Court on December 17, 2010. Rousseff, who campaigned using the slogan "For Brazil to keep on changing", was widely-celebrated as the first female president of Brazil and a symbol of continuity from her highly popular predecessor, Luiz Inácio Lula da Silva. According to the Sensus polling institute, Lula might have been the most popular head of
Impeachment of Dilma Rousseff Brazilian national petroleum company, Petrobras, on account of allegations uncovered by the Operation Car Wash investigation, and for failing to distance herself from the suspects in that investigation. Rousseff was president of the Petrobras board of directors during the period covered by the investigation, and approved Petrobras' controversial acquisition of the Pasadena Refining System. However, the Petrobras charges were not included in the impeachment because Prosecutor-General Rodrigo Janot successfully argued that a sitting president could not be investigated while in office for crimes committed prior to election. Rousseff was formally impeached on 17 April 2016. On 12 May, the Senate