Over 3,200 Candidates to Run for 284 Seats in Colombia’s Legislative Elections This Sunday

Seats are distributed using the D’Hondt method, known in Colombia as the cifra repartidora, which allocates seats proportionally according to the number of votes obtained.

A total of 3,231 candidates will compete for seats in Colombia’s congress in the legislative elections scheduled for March 8, according to the Registraduría Nacional del Estado Civil (RNEC), the authority responsible for organizing the country’s electoral processes. In total, 102 senators and 182 members of the House of Representatives will be elected.

According to the electoral authority, 1,124 candidates registered for the Senate and 2,107 for the House of Representatives, the two chambers that make up Colombia’s congress.

As the political analysis website Razón Pública explains, Colombia’s electoral system is based on proportional representation, which seeks to reflect the diversity of political opinions within society in the composition of Congress. For the Senate, or upper chamber, voters may cast their ballots for candidates anywhere in the country, as it operates under a national constituency. In contrast, the House of Representatives, or lower chamber, is elected through territorial constituencies by departments, including Bogotá as the Capital District.

According to the RNEC, 41,287,084 citizens are eligible to vote in the upcoming elections, a key figure because it influences how seats are allocated.

Senate elections

In this election, 102 senators will be chosen by popular vote. According to the Senate’s official website, 100 will be elected through a nationwide constituency and the remaining two seats are reserved for indigenous communities, a special constituency established by the 1991 Constitution to guarantee political representation for these groups.

Voters must choose between receiving the national ballot or the Indigenous constituency ballot, but they cannot vote in both.

House of Representatives elections

For the House of Representatives, 182 members will be elected, distributed as follows:

• Territorial constituencies: 161 seats allocated to departments and the Capital District of Bogotá.
• Special Transitional Peace Constituencies: 16 seats reserved for victims of the armed conflict, created by the Acto Legislativo 02 of 2021.
• Afro-descendant communities: 2 seats.
• Indigenous communities: 1 seat.
• Community of San Andrés (Raizal): 1 seat.
• Colombians living abroad: 1 seat.

Unlike the Senate, each department receives a specific number of seats based on its population, creating regional electoral dynamics in which local political leadership often plays a key role. In practice, more populous departments hold greater representation than smaller ones.

Both the Senate and the House of Representatives receive one additional seat after the presidential election, allocated to the candidate who obtains the second-highest number of votes.

How seats are allocated

Colombia’s electoral system is regulated by the Acto Legislativo 001 of 2003 and the Electoral Law, and operates under principles of proportional representation.

First, the valid votes obtained by each party list are counted. Only those lists that surpass a 3% threshold of total valid votes are eligible to participate in the distribution of seats. In the 2022 legislative elections, this threshold exceeded 509,000 votes.

According to projections by the Misión de Observación Electoral (MOE), the threshold for the Senate in the upcoming elections could reach around 600,000 votes.

This threshold is crucial because if, for example, a candidate obtains 450,000 votes but their party fails to pass the threshold, neither the candidate nor the party will secure a seat in Congress.

Among the lists that surpass the threshold, seats are distributed using the D’Hondt method, known in Colombia as the cifra repartidora, which allocates seats proportionally according to the number of votes obtained. In 2022, the seat-allocation quotient was 144,013 votes.

For the House of Representatives, the process is more complex because the threshold and D’Hondt method are applied separately within each department, producing different results across regions.

With closed lists, voters select only the political party or list as a whole, without choosing an individual candidate.

Open and closed lists

Under the Acto Legislativo 1 of 2003, political parties may register open lists or closed lists. With open lists, voters select a specific candidate within a party’s list. The vote counts both for the political party and for the individual candidate. Seats obtained by the party are then assigned to the candidates who received the highest number of votes, regardless of their initial position on the list.

With closed lists, voters select only the political party or list as a whole, without choosing an individual candidate. Seats are then allocated according to the order predetermined and registered at the start of the campaign by the party.

In the upcoming elections, two of Colombia’s most prominent political forces will present closed lists: the Pacto Histórico, the coalition led by current President Gustavo Petro, and the Centro Democrático, the right-wing party founded by former President Álvaro Uribe Vélez.

Photo courtesy of the National Civil Registry of Colombia,