A combination picture shows Sao Paulo's mayoral candidates leftist Guilherme Boulos, left, and center-right incumbent mayor Ricardo Nunes react after voting at their polling stations during the municipal elections in Sao Paulo, Brazil October 6, 2024.

Incumbent Ricardo Nunes and leftist lawmaker Guilherme Boulos will face each other in a runoff to decide the next mayor of Sao Paulo, following a first round of voting Sunday in Brazil’s local elections.

Centrist and center-right parties won city halls and consolidated control of town councils across Brazil in Sunday's municipal elections, underscoring a conservative shift in the country's electorate as the ruling Workers Party lost ground.

An insurgent candidate is splitting the Brazilian right ahead of Sunday municipal elections, testing Jair Bolsonaro’s grip on the rabid movement he has sought to lead even after losing the presidency two years ago.