The Independent National Electoral Commission (INEC) has declared Alhaji Musa Mustapha of the All Progressives Congress (APC) as the of winner of Yobe East Senatorial by-election.Prof Ibrahim Jajere, the INEC Returning Officer for the election announced the results on Sunday in Damaturu” Umar Kalli of ADC party scored 452 votes, Musa Mustapha of APC scored