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Genuine Opposition or GO (coalition of oppositon parties formed to contest the 2007 elections); Kabalikat Ng Malayang Pilipino or Kampi [Ronaldo PUNO]; Laban Ng Demokratikong Pilipino (Struggle of Filipino Democrats) or LDP [Edgardo ANGARA]; Lakas Ng Edsa (National Union of Christian Democrats) or Lakas [Jose DE VENECIA]; Liberal Party or LP [Manuel ROXAS/Eli QUINTO]; Nacionalista [Manuel VILLAR]; National People's Coalition or NPC [Frisco SAN JUAN]; PDP-Laban [Aquilino PIMENTEL]; People's Reform Party [Miriam Defensor SANTIAGO]; PROMDI [Emilio OSMENA]; Pwersa Ng Masang Pilipino (Party of the Philippine Masses) or PMP [Joseph ESTRADA]; Reporma [Renato DE VILLA]

source: CIA World Factbook