Workers' Party (Brazil) the centre-right opposition bloc as it shrank from 133 to 111 deputies. The left-wing opposition, formed by PSOL, retained control of three seats. The party was also expected to elect its presidential candidate Dilma Rousseff in the first round. However, she was not able to receive the necessary amount of valid votes (over 50%) and a second round in which she scored 56% of the votes took place on 31 October 2010. On 1 January 2011, she was inaugurated and thus became the first female head of government ever in the history of Brazil and the first "de facto" female
Opinion polling for the 2010 Brazilian presidential election candidates receives more than a half of the valid votes, a run-off is held four weeks after the first round. The leading candidate, Dilma Rousseff, received 46.9% of the first-round vote, thereby making a second round necessary. In the election, Brazilian citizens eligible to vote chose their successor to then-President Luiz Inácio Lula da Silva, of the democratic socialist/social democratic Workers' Party. According to the Constitution, the President is elected directly to a four-year term, with a limit of two terms. Lula was hence ineligible for a third term, since he was elected in 2002 and re-elected in 2006. The