This includes candidates who switched parties after the campaign period has begun, while excluding party-list representatives.

[1] In the party-list election, Ako Bicol Political Party topped the election getting 5% of the national vote and won three seats, but their proclamation was delayed as a disqualification case against them was brought up; their first three nominees were subsequently seated with the dismissal of the case.

Despite being the party leader and winning a congressional seat in Pampanga, Lakas Kampi CMD leader and sitting president Gloria Macapagal Arroyo had reportedly declined to run as Speaker and is fielding Edcel Lagman of Albay on the basis of term–sharing with Danilo Suarez of Quezon if they win the speakership.

[3] Meanwhile, the Liberals will be fielding in former Speaker Feliciano Belmonte Jr. of Quezon City, who was also a former Lakas Kampi member.

Incumbent Speaker Prospero Nograles is barred from seeking office in the House after serving three consecutive terms; he was defeated in the Davao City mayoralty election, although his son successfully kept his father's seat.

Notable celebrities who won include Imelda Marcos (KBL, Ilocos Norte–2nd), Lani Mercado (Lakas Kampi, Cavite–2nd), Lucy Torres (Liberal, Leyte–4th) and Manny Pacquiao (PCM, Saranggani).

The races are between local politicians in the districts, and their allegiances and parties may switch from their announcement on the intention to run, registering as a candidate, printing out of ballots, election day and from the convening of the 15th Congress.

The sitting president's party usually controls the House of Representatives no matter the election result.

Lakas-Kampi aimed to secure enough votes to impeach (96) as leverage if their presidential candidate Gilberto Teodoro does not win.

The Liberal Party chose former Lakas-Kampi stalwart and Quezon City mayor Feliciano Belmonte Jr. as their candidate for the speakership.

Belmonte, a former speaker while being a member of Lakas-CMD (one of the two parties that formed Lakas-Kampi), defected to the Liberals before the election.

Three Lakas Kampi congressmen instead made themselves available to run for speaker: Edcel Lagman (Albay), Danilo Suarez (Quezon) and Elpidio Barzaga Jr. (Dasmariñas) in a party caucus.

[24] With the House "tradition" in which congressmen align themselves with the party of the president, Belmonte now has at least 150 congressmen pledging support for him, including 75 from the Liberal Party, members of the Nationalist People's Coalition (NPC), Nacionalistas, PDP–Laban, party-list groups, and "some 55" members of the Lakas-Kampi independent bloc.