In the 2022 election, parties aligned with the UniTeam Alliance and eventual president Bongbong Marcos secured a supermajority of seats in the House of Representatives of the Philippines.

Party-lists and political parties participating in the district elections may forge coalition deals with one another.

Congress can either redistrict the entire country within three years after each Philippine census, or create new districts from existing ones piecemeal, although Congress has never redistricted the entire country wholesale since the approval of the 1987 constitution.

Congress usually creates a new district once a place reaches the minimum 250,000 population mandated by the constitution.

These are the districts, not contested in 2022, created by the 18th Congress that were either signed by then-President Rodrigo Duterte or approved by lapse: On June 21, 2024, the Commission on Elections (COMELEC) confirmed that there will be 254 congressional districts to be contested in the election and 63 seats apportioned among the party-lists.

[7] In both chambers of Congress, members are organized into "blocs", akin to parliamentary groups elsewhere.

On January 14, 2025, the Supreme Court ordered the COMELEC to add several aspirants on the ballot after disqualifying them.

The following members of Congress are eligible for another term, but have chosen to retire or seek other positions.