On the campaign trail he has sounded optimistic about his prospects, despite saying that the political field is tilted against the CCC, with little access to state media, and an electoral commission he says is staffed by ruling party supporters.
He says he has faced threats to his life, which have made him extremely cautious and mistrustful - including escaping an alleged assassination attempt in 2022 when his convoy came under attack during by-election campaigns.
An ordained church pastor who graduated from Living Waters Theological Seminary in 2016 and a practising lawyer, Mr Chamisa’s social media timeline is filled with political commentary and biblical references in almost equal measure.
He thinks the opposition candidate has missed opportunities to wage a robust campaign in the face of allegations of rampant government corruption and public discontent at the spiralling cost of living.
During the last presidential campaign, he boasted he had met Rwandan President Paul Kagame and been central in crafting a digital strategy that had been key to Rwanda’s economic success.
In the 23 August poll, Mr Chamisa is hoping to emulate the victory of long-time Zambian underdog Hakainde Hichilem, who lost every presidential election since 2006, until he finally won in 2021.