[1] Of the 166 members of the House of Representatives, 162 were elected by proportional representation from 33 multi-member constituencies based on the departments, with seats allocated using the largest remainder method.

[4] Commons, the political successor of the former rebel group FARC, were guaranteed five seats in the House and five in the Senate as part of the Colombian peace process.

[5][6] For the first time, 16 seats in the House, as agreed to during the negotiations in Havana and ratified by an act of legislation on 25 August 2021, were reserved for victims of the Colombian conflict.

The Liberal leader, César Gaviria, assured that the alliance would "allow the president-elect to overcome a political hurdle", which would provide the Historic Pact with less difficulty in advancing their agenda.

The Party of the U also declared they would not serve as an opposition bloc and contemplated whether to join the government or remain neutral.