Bolsonaro called on the government faithful to pack an Olympic arena in a working-class neighborhood for an event billed as "United for the Good of Brazil." For over an hour, he delivered a speech that catered to his base -- embracing traditional family values and attacking his main opponent, former President Luiz Inacio Lula da Silva.

"Today Brazil has a president who believes in God, who defends police and soldiers, who defends families," he said, after claiming Lula wants to legalize drugs and abortion. "That's not someone who wants the good of his people."

But with just over two months before the first round of voting, opinion surveys widely show Brazilians think they'd be better off without Bolsonaro. Frustration over the spiraling cost of living has propelled Lula to lead the race by more than 10 percentage points.