Brazilians vote in presidential election runoff pitting leftist Lula against far-right Bolsonaro

<p>Incumbent president lost in first round to senator and son of convicted ex-president </p><p>Brazilians are going to the polls on Sunday in a highly unpredictable runoff in which the leftist president, <a href="https://www.theguardian.com/world/luiz-inacio-lula-da-silva">Lu