 The opposition united under Aquino's widow, Corazon Aquino, and Salvador Laurel, head of the United Nationalists Democratic Organizations (UNIDO).The election was marred by widespread reports of violence and tampering with results by both sides.The official election canvasser, the Commission on Elections (COMELEC), declared Marcos the winner, despite a walk-out staged by disenfranchised computer technicians on February 9.