Dilma Rousseff run for president. She was elected in a run-off on 31 October 2010, beating Brazilian Social Democracy Party (PSDB) candidate José Serra. On 26 October 2014 she won a narrow second-round victory over Aécio Neves, also of the PSDB. Impeachment proceedings against Rousseff began in the Chamber of Deputies on 3 December 2015. On 12 May 2016, the Senate of Brazil suspended President Rousseff's powers and duties for up to six months or until the Senate decided whether to remove her from office or to acquit her. Vice President Michel Temer assumed her powers and duties as Acting President 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