Photo: CNN Brasil.
Brazil’s Liberal Party (PL), the party of presidential candidate Flávio Bolsonaro, emerged from the October 4 legislative elections with the largest single-party representation in both chambers of Congress, according to results reported the following day. Reuters reported that PL’s Senate representation rose from 15 to 28 seats and that it was projected to win 121 of the 513 seats in the Chamber of Deputies, up from 98. The Senate vote renewed two-thirds of its 81 seats; all 513 lower-house seats were contested.
The Associated Press separately reported that PL won about one-third of the Senate seats contested and nearly one-quarter of the lower-house seats, making it the largest party in both chambers. Reuters’ lower-house figure was a projection based on electoral data, while AP described the broad party result. The two reports point to a stronger PL bloc, though neither means the party controls a majority on its own.
Other parties also made gains. Reuters said the Workers’ Party (PT) increased its representation in the lower house, while right-leaning and centrist parties together were positioned to hold a large share of seats. Brazil’s coalition system means legislation typically depends on agreements among multiple parties, and party seat totals do not by themselves determine how individual lawmakers will vote.
The new legislature is due to take office in 2027. Its composition will shape committee leadership, budget negotiations and the prospects for bills, regardless of who wins the presidential runoff scheduled for October 25. The congressional outcome is distinct from the presidential first-round result: it sets the balance of representation in the legislature but does not decide the executive contest or guarantee passage of any particular proposal.