# 2004 Philippine House of Representatives elections

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.
The elected representatives served in the 13th Congress from 2004 to 2007.

## Electoral system

The House of Representatives shall have not more than 250 members, unless otherwise fixed by law, of which 20% shall be elected via the party-list system, while the rest are elected via congressional districts.
In this election, there are 209 seats voted via first-past-the-post in single-member districts. Each province, and a city with a population of 250,000, is guaranteed a seat, with more populous provinces and cities divided into two or more districts.
Congress has the power of redistricting three years after each census.
As there are 209 congressional districts, there shall be 52 seats available under the party-list system. A party has to cross the 2% electoral threshold to win a guaranteed seat. Next, the court ruled that the first-placed party should always have more seats than the other parties, and that the prior 2%–4%–6% method will only be used for the first-placed party. As for parties that got 2% of the vote but did not have the most votes, they will automatically have one more seat, then any extra seats will be determined via dividing their votes to the number of votes of the party with the most votes, then the quotient will be multiplied by the number of seats the party with the most votes has. The product, disregarding decimals (it is not rounded), will be the number of seats a party will get.

## Redistricting

Reapportioning (redistricting) the number of seats is either via national reapportionment three years after the release of every census, or via piecemeal redistricting for every province or city. National reapportionment has not happened since the 1987 constitution took effect, and aside from piecemeal redistricting, the apportionment was based on the ordinance from the constitution, which was in turn based from the 1980 census.
Three new districts were created, all within Metro Manila and its bordering cities.

### Changes from the outgoing Congress

* Division of Parañaque's at-large congressional district to two districts
** Parañaque's western barangays becomes the 1st district.
** The eastern barangays becomes the 2nd district.
** Enacted into law as Republic Act No. 9229.
* Division of Bulacan's 4th congressional district to two districts
** San Jose del Monte becomes its own at-large district.
** The rest of the 4th district was left intact.
** Enacted into law as Republic Act No. 9320.
* Division of Antipolo's at-large congressional district to two districts
** Antipolo's western barangays becomes the 1st district.
** The rest of the city becomes the 2nd district.
** Enacted into law as Republic Act No. 9232.

## Results
### District elections

| | Lakas–CMD | 92 | +13 |
| | Nationalist People's Coalition | 53 | +11 |
| | Liberal Party | 29 | +10 |
| | Laban ng Demokratikong Pilipino | 15 | −6 |
| | Pwersa ng Masang Pilipino | 5 | +1 |
| | Aksyon Demokratiko | 2 | 0 |
| | Kabalikat ng Malayang Pilipino | 2 | +1 |
| | Nacionalista Party | 2 | New |
| | PDP–Laban | 2 | 0 |
| | Kilusang Bagong Lipunan | 1 | 0 |
| | Partido Demokratiko Sosyalista ng Pilipinas | 1 | 0 |
| | Partido para sa Demokratikong Reporma | 1 | −1 |
| | Independent | 4 | −4 |
| Party-list seats | Party-list seats | 52 | 0 |
| Total | Total | 261 | 0 |
| Source: Teehankee, Julio (2002). "Electoral Politics in the Philippines" (PDF). In Croissant, Aurel (ed.). Electoral Politics in Southeast and East Asia. Singapore: Fiedrich-Ebert-Siftung. pp. 149–202 – via quezon.ph. ||||
* ↑ Only 28 were seated in the party-list election.

### Party-list election

| Party | Party | Votes | % | +/– | Seats | +/– |
| | Bayan Muna | 1,203,305 | 9.46 | −1.84 | 3 | 0 |
| | Association of Philippine Electric Cooperatives | 934,995 | 7.35 | +2.04 | 3 | 0 |
| | Akbayan | 852,473 | 6.70 | +4.20 | 3 | +1 |
| | Buhay Hayaan Yumabong | 705,730 | 5.55 | +3.63 | 2 | +1 |
| | Anakpawis | 538,396 | 4.23 | +4.23 | 2 | +1 |
| | Citizens' Battle Against Corruption | 495,193 | 3.89 | +1.75 | 2 | +1 |
| | Gabriela Women's Party | 464,586 | 3.65 | New | 2 | +1 |
| | Partido ng Manggagawa | 448,072 | 3.52 | +2.09 | 2 | +1 |
| | Butil Farmers Party | 429,259 | 3.37 | +1.19 | 2 | +1 |
| | Alliance of Volunteer Educators | 343,498 | 2.70 | New | 1 | New |
| | Alagad | 340,977 | 2.68 | +1.91 | 1 | New |
| | Veterans Freedom Party | 340,759 | 2.68 | −1.16 | 1 | +1 |
| | Cooperative NATCCO Network Party | 270,950 | 2.13 | +0.63 | 1 | New |
| | Anak Mindanao | 269,750 | 2.12 | +0.43 | 1 | 0 |
| | Ang Laban ng Indiginong Filipino | 269,345 | 2.12 | New | 1 | New |
| | An Waray | 268,164 | 2.11 | New | 1 | New |
| | Alyansang Bayanihan ng mga Magsasaka Mangagawang Bukid at Mangingisda and Adhikain at Kilusan ng Ordinaryong Tao | 251,597 | 1.98 | New | 0 | – |
| | Alliance for Nationalism and Democracy | 244,137 | 1.92 | New | 0 | – |
| | Senior Citizens/Elderly | 236,571 | 1.86 | New | 0 | – |
| | Philippines Guardians Brotherhood | 213,662 | 1.68 | New | 0 | – |
| | Ang Nagkakaisang Kabataan para sa Sambayanan | 213,068 | 1.67 | New | 0 | – |
| | Trade Union Congress Party | 201,396 | 1.58 | New | 0 | – |
| | Sanlakas | 189,517 | 1.49 | +0.49 | 0 | −1 |
| | Bigkis Pinoy Movement | 186,264 | 1.46 | +0.43 | 0 | – |
| | Suara Bangsamoro | 164,494 | 1.29 | New | 0 | – |
| | Philippine Coconut Producers Federation | 163,952 | 1.29 | −0.23 | 0 | −1 |
| | Sagip-Kapwa Foundation | 161,797 | 1.27 | New | 0 | – |
| | Aksyon Sambayan | 156,467 | 1.23 | New | 0 | – |
| | People's Movement Against Poverty | 144,740 | 1.14 | New | 0 | – |
| | Barangay Association for National Advancement and Transparency | 143,454 | 1.13 | New | 0 | – |
| | Abay Pamiliya Foundation | 133,952 | 1.05 | +0.98 | 0 | – |
| | Samahan ng mga Mangangakal para sa Ikauunlad ng Lokal na Ekonomiya | 133,425 | 1.05 | New | 0 | – |
| | Abanse! Pinay | 115,855 | 0.91 | +0.02 | 0 | −1 |
| | Migrante Sectoral Party of Overseas Filipinos and their Families | 110,507 | 0.87 | New | 0 | – |
| | Alab Katipunan | 92,262 | 0.73 | New | 0 | – |
| | Assalam Bangsamoro People's Party | 91,975 | 0.72 | New | 0 | – |
| | Gabay ng Manggagawang Pilipino Party | 89,978 | 0.71 | +0.59 | 0 | – |
| | Alyansa ng may Kapansanang Pinoy | 86,673 | 0.68 | New | 0 | – |
| | Pinoy Overseas | 79,214 | 0.62 | New | 0 | – |
| | Ahonbayan | 68,203 | 0.54 | +0.35 | 0 | – |
| | Advocates and Adherents of Social Justice for School Teachers and Allied Workers | 65,596 | 0.52 | New | 0 | – |
| | Seaman's Party | 65,231 | 0.51 | +0.01 | 0 | – |
| | Bahandi sa Kaumahan ug Kadagatan | 61,665 | 0.48 | New | 0 | – |
| | National Federation of Small Coconut Farmers Organization | 55,378 | 0.44 | New | 0 | – |
| | Bagong Tao Movement | 52,919 | 0.42 | New | 0 | – |
| | Alyansa ng Sambayanan para sa Pagbabago | 50,063 | 0.39 | New | 0 | – |
| | Maritime Party | 48,037 | 0.38 | −0.27 | 0 | – |
| | Visayas Farmers Party | 42,920 | 0.34 | New | 0 | – |
| | The True Marcos Loyalist (For God Country and People) | 42,050 | 0.33 | −0.81 | 0 | – |
| | Mindanao Federation of Small Coconut Farmers Organization | 39,194 | 0.31 | New | 0 | – |
| | Philippine Confederation of Drivers Organization and Alliance of Concerned Transport Operators | 38,093 | 0.30 | New | 0 | – |
| | Organisasyon ng Manggagawang Mag-aangat sa Republika | 38,389 | 0.30 | New | 0 | – |
| | Confederation of Grains Retailers Association of the Philippines | 33,950 | 0.27 | New | 0 | – |
| | Lapiang Manggagawa | 31,386 | 0.25 | New | 0 | – |
| | Philippine Association of Retired Persons | 30,984 | 0.24 | New | 0 | – |
| | Farmers and Fisherfolks Aggrupation of the Philippines | 28,739 | 0.23 | New | 0 | – |
| | Aging Pilipino Organization | 27,609 | 0.22 | New | 0 | – |
| | Kaisang Loob para sa Marangal na Paninirahan | 26,392 | 0.21 | New | 0 | – |
| | Partido Katutubo Pilipino | 22,370 | 0.18 | New | 0 | – |
| | Partido Isang Bansa, Isang Diwa | 17,994 | 0.14 | New | 0 | – |
| | Visayan Association of the Philippines | 13,340 | 0.10 | New | 0 | – |
| | Novelty Entrepreneurship & Livelihood for Food | 13,266 | 0.10 | New | 0 | – |
| | Tribal Association of the Philippines | 8,753 | 0.07 | New | 0 | – |
| | Federation of Land Reform Farmers of the Philippines | 8,660 | 0.07 | New | 0 | – |
| | Sandigang Maralita | 7,992 | 0.06 | −0.01 | 0 | – |
| | Democratic Workers of the Philippines | 3,900 | 0.03 | −0.01 | 0 | – |
| Total | Total | 12,723,482 | 100.00 | – | 28 | +11 |
| Valid votes | Valid votes | 12,723,482 | 96.07 | +52.92 | | |
| Invalid/blank votes | Invalid/blank votes | 520,022 | 3.93 | −52.92 | | |
| Total votes | Total votes | 13,241,974 | – | – | | |
| Registered voters/turnout | Registered voters/turnout | 44,872,007 | 29.51 | −12.17 | | |
| Source: COMELEC |||||||