Nigeria, Oct. 28 -- Cameroon has entered another eighth-year term under President Paul Biya after the country's Constitutional Council confirmed his re-election on Monday.

At 92 years old, the world's oldest sitting president won 53.66 % of the vote in the 12 October poll. His closest challenger, Issa Tchiroma Bakary, received 35.19 %, according to the official count.

"Hereby proclaimed president-elect: the candidate Biya Paul," declared Council President Clement Atangana, as the results were announced in Yaounde.

This victory extends Biya's rule to 43 years and, if he completes the term ending around 2032, he will be close to 100 years old .

Why Biya keeps winning

Analysts point to four main pillars of his political survival:

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