BRAZZAVILLE: At the age of 82 and after more than 40 years in power, Denis Sassou Nguesso is the clear favorite to win Sunday’s presidential election in Congo-Brazzaville. With the opposition divided, sidelined and largely absent, observers say voter turnout could slump to a record low in the oil-rich but impoverished central African country. Sassou Nguesso ranks as one of Africa’s longest-serving leaders, along with Equatorial Guinea’s Teodoro Obiang Nguema and Cameroonian President Paul Biya. “Honestly, I don’t see the point of voting on March 15.