[1] The vacancy arose when Jesus Crispin Remulla, the district's representative, opted to not take his seat in the 19th Congress to serve as the Secretary of Justice in the administration of President Bongbong Marcos.

[2] Four candidates ran to fill the seat: Crispin Diego Remulla, an incumbent board member from the 7th district and a son of Jesus Crispin Remulla; Melencio "Jun" De Sagun, a former mayor of Trece Martires; and independents Jose Angelito Aguinaldo and Michael Angelo Santos.

[7] Cavite's 7th congressional district is composed of the province's de facto capital city of Trece Martires and the adjacent municipalities of Amadeo, Indang, and Tanza.

The district's incumbent representative, Jesus Crispin Remulla, was unopposed in the 2022 general election, resulting in his reelection to a second term.

[8] Remulla is part of a political dynasty in Cavite; his younger brother, Jonvic, is currently the province's governor since 2019 and previously from 2010 to 2016.

[2] He accepted the position, resigning his rights to the seat before his term as a representative began in order to assume the office.

[18] It was reported that the commission set up four "technical hubs" as part of an "enhanced continuity plan" to ensure the fluidity of the elections.

Laudiangco reported that each of the hubs “is capable of reconfiguring within one minute any secure digital (SD) card which may present issues”.

[16][4] Sagun launched his campaign by visiting four churches from the towns of Amadeo, Indang, Tanza, and Trece Matires.

[36] Meanwhile, on March 16, the National Unity Party designated Abeng Remulla, Crispin Diego's brother, as his successor in the Cavite Provincial Board.

[37] In the 2025 Senate election, Benhur Abalos, secretary of the Interior and Local Government, resigned in order to run.

[38] Abeng, who replaced Crispin Diego in the provincial board, substituted for his father Jonvic for the gubernatorial election.