The 2010 House of Representatives of the Philippines party-list election was on May 10, 2010. The whole country was one at-large district, where parties nominate three persons to be their candidates, ranked in order of which they'll be seated if elected. The elected representatives will serve in the 15th Congress.
Candidates from the district elections are not allowed to be nominated by the parties participating in the party-list election, nor are parties who have candidates in the district elections may be allowed to join the party-list election; the parties in the party-list election must represent a distinct "sector" in the society such as women, laborers and the like.
In the election, the voter elects the party, not the nominees of the party; a voter may not be able to influence how the nominees are listed on election day, except for joining the party beforehand. If the party surpasses 2% of the national vote, the person first nominated by the party will be seated. Additional seats can be won by multiplying the percentage of the votes the party got, with the difference of number of seats the party already has (1), and the number of seats allocated for sectoral organizations (57), disregarding decimals, with no party getting more than two additional seats. However, usually only the party with the most votes gets the two additional seats, the other parties will get only one additional seat. If the number of seated representatives is less than the 20% quota of party-list representatives in Congress (57 for the 15th Congress), the unfilled seats will be filled up by the remaining parties in descending order of votes garnered until are seats are filled up. Note that with more than a hundred parties participating, and with the three-seat cap, the seats that the parties with 2% of the vote or more will always be less than the 20% allocation.