Elections for the House of Representatives of the Philippines were held on May 10, 2004.
Being held together with presidential election, the party of the incumbent president Gloria Macapagal Arroyo, Lakas-Christian Muslim Democrats, and by extension the administration-led coalition, the Koalisyon ng Katapatan at Karanasan sa Kinabukasan (K4), won majority of the seats in the House of Representatives.
In this election, there are 209 seats voted via first-past-the-post in single-member districts.
A party has to cross the 2% electoral threshold to win a guaranteed seat.
The product, disregarding decimals (it is not rounded), will be the number of seats a party will get.