While Cameroon's president, Paul Biya, seeks an eighth term in office at the age of 92, Issa Tchiroma Bakary, a former minister turned opposition leader, has benefited from a sudden surge in popularity.

Cameroon's Paul Biya promises young voters "the best is yet to come" as others hunger for "young blood".

Biya, who has ruled for 43 years, is seeking an eighth term despite calls for him to step down.