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
Green party party), taking enough votes from Dilma Rousseff of the incumbent PT party to stop her getting the 50% needed to avoid a second round of which she went on to beat Jose Serra of the opposition PSDB party. Despite only winning numerically the vote in one state, the Green Party came second in front of Dilma Rousseff in Amapa, Amazonas, Pernambuco and in Rio de Janeiro in front of Jose Serra. The Green Party tied with Serra in Ceara, both having 16.36% of the vote, although Dilma Rousseff won the state. Maranhão also had a 1.5% difference in vote between