New Delhi, Oct. 27 -- Brazilian President Luiz Inacio Lula da Silva recently won the election, securing his fourth term against his right-wing challenger, Flavio Bolsonaro. Lula received 51.79% of the vote and became the first president since the country's return to civilian rule in 1985 to win after losing the first round of voting. Lula's victory and unprecedented comeback are being attributed to a social media platform: WhatsApp.

According to reports by the BBC and The New York Times, a WhatsApp channel was created to mobilise his supporters, with his allies delivering one of the most unlikely comebacks in recent Brazilian politics and turning the tide in his favour.

At a time when many in Rio de Janeiro doubted whether the incumbent...