Political career

On February 12, 2007, Pacquiao officially announced that he would be running for a seat in the House of Representatives in the May 2007 legislative election as a candidate of the Liberal Party, aiming to represent the 1st District of South Cotabato. Pacquiao, who has been known to be supportive of the administration of President Gloria Macapagal-Arroyo, said that he was persuaded to run by local officials of General Santos City, who hoped he would act as a bridge between their interests and the national government. Pacquiao was defeated in the election by incumbent Rep. Darlene Antonino-Custodio, who said, "More than anything, I think, people weren't prepared to lose him as their boxing icon".

In September 2008, Pacquiao was sworn in as member of Kabalikat ng Malayang Pilipino (KAMPI), a pro-administration political party.

On November 21, 2009, Pacquiao confirmed that he would run again for the congressional seat but this time in Sarangani province, the hometown of his wife Jinkee. He originally planned to run for congress under his own party, the People's Champ Movement, but has since joined the Nacionalista Party headed by Manny Villar. Villar said arrangements were made to accommodate Pacquiao’s People’s Champ Movement in a coalition with the Nacionalista Party for the May 2010 elections in Sarangani.

On May 13, 2010, Pacquiao was officially proclaimed congressman of the lone district of Sarangani. He scored a landslide victory over a wealthy and politically well-entrenched clan of the province. His triumph ended the reign of Chiongbian clan that has been in power for more than thirty years. Pacquiao got 120,052 votes while his political rival, Roy Chiongbian, got 60,899 votes.

On June 28, 2010, Pacquiao took his oath of office as congressman before Supreme Court Associate Justice Antonio T. Carpio in the Provincial Capitol of Sarangani in Municipality of Alabel. He announced that he will transfer to President-elect Benigno “Noynoy” Aquino III's Liberal Party from Nacionalista Party as he wants to ensure the entry of more projects to his province.