Incumbent President Joseph Kabila was declared the winner of Congo's tense runoff election, defeating his ex-rebel leader rival in the war-ravaged country's first multiparty contest in more than four decades, the Associated Press reported. Kabila won with about 58 percent of the vote, compared with nearly 42 percent for Vice President Jean-Pierre Bemba, said Apollinaire Malu Malu, chairman of the Independent Electoral Commission.