The leading opposition presidential candidate in Congo-Brazzaville has spent election day in hospital after becoming seriously ill with Covid-19.
In a video circulating on social media, 61-year-old Guy Brice Parfait Kolelas is seen briefly removing an oxygen mask to tell his supporters that he is “fighting death”.
He urges them to vote in Sunday’s poll.
President Denis Sassou Nguesso, who is widely seen as an authoritarian ruler, is expected to win again.
Mr Kolelas, who is diabetic, is one of six candidates running against Mr Sassou Nguesso, 77.
Family members have said they are trying to arrange for him to be evacuated to France for treatment.
Mr Kolelas missed his final campaign event on Friday after saying a day earlier that he feared he had malaria, the Associated Press news agency reports.
He was admitted to a private hospital in the capital, Brazzaville, and it was later confirmed that he had Covid-19.
Speaking in French from his hospital bed, Mr Kolelas said: “My dear compatriots, I am in trouble. I am fighting death. However, I ask you to stand up and vote for change. I would not have fought for nothing.
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The head of the government’s Covid-19 response team, Elira Dokekias, said that Mr Kolelas’ condition had been serious on Saturday, the Associated Press reports.
It had stabled enough on Sunday for him to be transferred to a coronavirus unit at the university hospital in Brazzaville, and he would be taken abroad for treatment, Dr Dokekias was quoted as saying.
After casting his ballot in the capital, Mr Sassou Nguesso wished Mr Kolelas a swift recovery.
A large crowd gathered to catch a glimpse of the president, with many people not wearing masks and failing to adhere to social distancing rules.
Mr Sasou Nguessou beat Mr Kolelas in the last election in 2016, obtaining 60% of the vote compared with his rival’s 15%.
The watchdog group NetBlocks reported that the internet had been shut down ahead of Sunday’s voting.
The largest opposition party, the Pan-African Union for Social Democracy (UPADS), is boycotting the election, saying it fears the poll could divide the nation.
Congo-Brazzaville’s Catholic Church episcopal conference has said it has “serious reservations” about the election’s transparency.
Mr Sassou Nguesso has been in power since 1979, except for a five-year period after losing elections in 1992.
Congo-Brazzavile has officially recorded more than 9,000 cases of Covid and 130 deaths.