Brazilian Indigenous leaders and environmentalists are outraged after lawmakers approved a measure that would affect claims to Indigenous land, and potentially, environmental protections.

The illegal miners have polluted rivers and land in the reserve, leading to widespread hunger and disease.

President Jair Bolsonaro, who is running for reelection Sunday, has pledged to fully pave BR-319 and turn it into a kind of jungle expressway, raising alarm from environmental groups.

Under President Jair Bolsonaro, who is running for reelection in Sunday's vote, forest clearing and wildfires have surged in the Amazon.

As one of the world's largest democracies heads to the polls on Sunday, here are the main candidates and issues in the Brazilian election.