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 in retaliation. Cunha dismissed that his decision was motivated by personal or political reasons. In his defence, Cunha said that opening the impeachment process was his constitutional duty as chamber president, and the decision to do so was based only on facts related to the budget laws. Cunha said further that he had no personal grievance against the Workers' Party and that Rousseff had signed six decrees for additional spending, which had increased the 2015 federal spending in non-compliance with the annual budget law and without approval of the Congress. Rousseff denied any attempted deal to save Cunha in return