Brazil is choosing a new president: here's what you need to know.

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RIO DE JANEIRO, Brazil – Brazil holds presidential and legislative elections on Sunday, October 7. A far-right politician promising a hard line on crime and corruption, Jair Bolsonaro, is the frontrunner for the top job. (READ:  Presidential debate showcases divided Brazil )

Here's what you need to know:

How important are the elections?

Brazil is one of ... via PK