Flavio Bolsonaro edges Lula into Oct 25 runoff as conservatives sweep Brazil's Congress

Final results from Brazil's first round gave the Liberal Party and about 20 right leaning parties 276 of 513 seats in the Chamber of Deputies, with the PL alone taking 121 seats, up from 99. The bloc will hold 49 of 81 Senate seats when the new Congress sits in 2027. Flavio Bolsonaro led Lula by more than two million votes in the first round. Donald Trump hailed the result as "a great victory."

The runoff is set for October 25, and the two live fault lines are already drawn. Finance minister Dario Durigan dismissed the Bolsonaro market rally as a "cheap, hollow illusion" and warned of a 200 billion reais fiscal shock under a Bolsonaro presidency. The markets, in his telling, are pricing a fantasy.

On the other side, Flavio Bolsonaro has said a win means pushing radical constitutional changes, including changes to the Supreme Court. That is not a vague promise of reform. It is a stated plan to rewrite the institutional rules, aimed at the court that has been the central battleground of Brazilian politics for years.

Between the fiscal warning and the constitutional ambitions, the runoff is a choice between two very different accounts of what a Bolsonaro presidency would do to the country's institutions and its economy. The congressional numbers add a third fact: with 276 Chamber seats and a near Senate majority, a Bolsonaro government would have the votes to attempt much of what it promises.

The numbers give the story its weight. A first round lead of more than two million votes is not a fluke of turnout, and 276 Chamber seats with 121 for the PL alone means the right will write the rules of the next Congress. The Senate figure, 49 of 81 seats when the new chamber sits in 2027, completes the picture of a legislature built to say yes. Against that arithmetic, Durigan's warning reads as the last argument of a government about to lose the room. The runoff will decide whether the warning or the ambition wins.