Factbox-Main election challengers to Cameroon’s 92-year-old incumbent
YAOUNDE (Reuters) -Following are details of the main opposition challengers to Cameroon’s 92-year-old President Paul Biya, the world’s oldest head of state, seeking to win an October 12 election that could keep him in office until he is nearly 100. ISSA TCHIROMA BAKARY A former government spokesperson who most recently served as employment minister, Tchiroma…