Four centre-right parties backed Flávio Bolsonaro on Wednesday, Oct. 7, giving the presidential hopeful a major boost ahead of his run-off against leftist incumbent Luiz Inácio Lula da Silva. União Brasil, Progressistas, Republicanos and Novo endorsed the son of former President Jair Bolsonaro.
The support arrived a day after a former adversary joined his camp. Ronaldo Caiado, a former Goias state governor and ex-presidential contender, endorsed Bolsonaro on Tuesday, Oct. 6. The campaign expects to complete its party endorsements by Thursday.
A Coalition Takes Shape
The numbers explain the urgency. In Sunday's first-round vote, held Oct. 4, Bolsonaro fell less than three percentage points short of the outright majority needed to win the presidency. That narrow gap now defines the race. With the scheduled run-off set for October 25, just 17 days away, every endorsement counts.
São Paulo Governor Tarcisio de Freitas made the case plainly at a Republicanos event late Wednesday. "We can't be part of a lost generation," he told Bolsonaro. "We have to deliver on the work that your father started."
Bolsonaro is working to bring that support together while answering critics who point to his lack of governing experience. He chose a conciliatory message. "I'll write every page of Brazil's history with you," he said at the Republicanos event. "I'm known as a bridge builder."
Constitutional Promises and a Single Term
Bolsonaro pledged to respect the Constitution and the nation's politics, and vowed to serve only one term if elected. "There will be stability, peace so everyone can work, as well as respect for the Constitution," he told reporters. "Brazil will go back to normal."
He also set out an ambitious agenda. On Tuesday, Bolsonaro said he could use a congressional majority to amend the Constitution if he became president. The election produced a more right-leaning legislature, raising the possibility of majorities in both the Senate and the lower house, as well as the election of leaders for both chambers.
He has identified judicial, tax and public security reforms as priorities that would require constitutional changes. He's also floated limiting presidents to a single term, a change that would bind his own tenure should he win.
What Comes Next
The campaign now shifts from coalition-building to persuasion. Bolsonaro must convince undecided voters that a first-time candidate can govern, while Lula runs as the incumbent. The endorsements give Bolsonaro organized party machinery across the centre-right, a practical advantage in a contest decided by thin margins.
The parties that signed on have different priorities. Yet they've set aside those differences to back a single challenger. That kind of consolidation often decides run-offs, when voters who backed other candidates in the first round must choose between two options.
Why This Matters: Brazil is a major economy, and its next president will shape tax policy, public security and the balance among institutions for years. Bolsonaro's promised judiciary and tax reforms would require constitutional amendments, making the composition of Congress as important as the presidency itself. A more right-leaning legislature could give a Bolsonaro administration the votes to act on that agenda. Investors and business owners will watch how a unified centre-right bloc governs, and whether a one-term pledge and talk of stability translate into predictable rules. Voters, meanwhile, face a clear choice between an incumbent leftist government and a challenger promising tax reform and a return to what he calls normal. October 25 will settle it.