Voters in Brazil are casting ballots for a presidential runoff on Sunday. Local media outlets predict a tight race between leftist former president Luiz Inacio Lula da Silva and right-wing incumbent Jair Bolsonaro.

Lula came on top in the first-round vote on October 2. Bolsonaro placed second. The latest polls suggest that Bolsonaro has narrowed Lula's lead.

Lula led the country for two terms between 2003 and 2010. He has gained support mainly from needy Brazilians. Lula is stressing that while in office he expanded social security for the underprivileged, and significantly reduced the number of low-income earners.

Bolsonaro has rallied support from wealthy people and conservatives. He is proposing a series of economic measures, including cutting fuel prices.

Leftist governments have taken power in several Latin American countries in recent years. They distance themselves from the United States.

Observers are watching to see if Brazil follows suit at a time when the US and the EU are increasingly at odds with Russia over the conflict in Ukraine.

Polling will end at 5 p.m. on Sunday. Vote counting will start immediately.