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
Dilma Rousseff on the projects (which Rousseff has insisted should continue, and even be accelerated, with some sites seeing multiple work shifts so that construction can continue more than twenty hours per day) were harsh, while pay was low despite a high cost of living at the remote construction sites. This led to strikes and other worker actions at several hydroelectric projects. In the spring of 2012, 17,000 workers at the Jirau Dam site went on strike for over three weeks, and later some began looting company stores, setting fire to dam structures, and destroying worker housing. Military troops eventually deployed to