Julia Brown and Ruth Pina, BBC: A WhatsApp group created to support Luiz Inacio Lula da Silva's re-election campaign is being cited by his supporters as one of the contributing factors to one of Brazil's most unexpected political comebacks in recent years. Brazil's left-leaning president followed his right-wing rival, Flavio Bolsonaro, but managed to turn the tide in just three weeks. At a time when many doubted that Lula could turn the tide, a WhatsApp channel named "Lula's Army" was established that quickly gained 8.1 million followers. The campaign, led by Congressman Andre Janones, encouraged supporters to share videos, promote hashtags and recruit new voters. The channel's dramatic growth between the two election rounds was particularly notable as it appeared to reverse a longstanding imbalance in Brazilian politics. Getty.

Julia Brown and Ruth Pina, BBC: A WhatsApp group created to support Luiz Inacio Lula da Silva's re-election campaign is being cited by his supporters as one of the contributing factors to one of Brazil's most unexpected political comebacks in recent years. Brazil's left-leaning president followed his right-wing rival, Flavio Bolsonaro, but managed to turn the tide in just three weeks. At a time when many doubted that Lula could turn the tide, a WhatsApp channel named "Lula's Army" was established that quickly gained 8.1 million followers. The campaign, led by Congressman Andre Janones, encouraged supporters to share videos, promote hashtags and recruit new voters. The channel's dramatic growth between the two election rounds was particularly notable as it appeared to reverse a longstanding imbalance in Brazilian politics. Getty.