Philippine President Gloria Arroyo was set for six more years in office after a major exit poll predicted an overwhelming victory in bitterly-contested national elections. US-trained economist Arroyo won 41 percent of the vote in Monday's election compared to 32 percent for her main challenger, film star Fernando Poe, the Social Weather Stations group said Tuesday. The poll said 81.5 percent of the Southeast Asian nation's 43.5 million voters took part, giving Arroyo victory by over three million votes. The poll questioned 4,627 voters and the margin of error was 1.5 percent. Analysts said that if the poll results were borne out in the final count, not expected for nearly a month, Arroyo would have a clear mandate to govern a country split by a dirty and acrimonious election campaign. At least 114 people were killed during the campaign which was characterized by mudslinging and allegations that elements within the armed forces were plotting a coup if their favoured candidate lost. The Philippine stock market slid nearly three percent Tuesday and the peso dipped against the US dollar on election uncertainty. The markets closed before the exit poll was released. The Poe camp earlier Tuesday accused Arroyo of trying to rig the vote count and alleged abuses including vote-buying and power black-outs aimed at sowing confusion during the count. Several thousand Poe supporters gathered in front of the stock exchange in Manila's Makati financial district late Tuesday chanting "Gloria Cheat" as a contingent of riot police stood guard. An opposition statement said: "The widespread irregularities could throw into doubt the validity of the election results in many parts of the country." **PHOTO CAPTION*** Opposition presidential candidate and Fernando Poe Jr. gives a statement a day after the election in Manila May 11, 2004. (Reuters)