HEREWARD HOLLAND THE main opposition candidate in Congo Republic's presidential election, Guy Brice Parfait Kolelas, has died while being evacuated for medical treatment, aides said yesterday, as early results from Sunday's vote showed the incumbent in the lead. Kolelas's election campaign had said on Sunday that the 61-year-old former minister was in hospital with COVID-19, which prevented him from casting his own vote. Kolelas had been seen as President Denis Sassou Nguesso's strongest challenger, although diplomats and analysts said there was little doubt the incumbent would win and extend his 36-year rule. Full results are not expected until later this…