By Angela Limwanya:Two officials from the National Democratic Congress -NDC- in Livingstone have defected to the ruling party Patriotic Front, PF.Felix Daka, who was NDC Livingstone District Chairman and Richard Sakala, who was Livingstone District NDC Youth Mobilisation Chairman, joined the ruling  party  in Livingstone today.Mr. Daka said about five-hundred NDC members are also willing…