On the eve of Pope Francis's funeral, the question of who will replace him is already on everyone's lips. Might it be an African? Of the 135 cardinal electors, 18 are from Africa. That's of growing significance as the continent accounts for around 20 percent of the world's Catholics. Some names have been mentioned, such as Peter Turkson from Ghana, a progressive voice; or the conservatives Robert Sarah from Guinea and Fridolin Ambongo Besungu from DR Congo.