National Congress

About parliament

Basic information such as the official name of parliament and details of its structure and leadership. Also includes the current breakdown of MPs by sex and age, and provisions for quotas and reserved seats.

Parliament name
Congreso Nacional (National Congress)
Chamber name
Congreso nacional (National Congress)
Parliamentary term (years)

IPU membership

Affiliation periods
from 1986 to 1992
from 2011
IPU Geopolitical Group/s IPU Geopolitical Groups: African Group, Arab Group, Asia-Pacific Group, Eurasia Group, Group of Latin America and the Caribbean (GRULAC), Twelve Plus Group.
Group of Latin America and the Caribbean (GRULAC)


Official title The Speaker may for example be known as the Presiding Officer, President, Chairman/Chairperson, etc.
Speaker of the National Congress
Mauricio Oliva Herrera (Male)
Year of birth

Secretary General

Official title This post is most commonly called Secretary General or Clerk. It may also be called Secretary, Head/Chief of the Secretariat, Director General, etc.
Secretary General (Primer secretario)
Secretary General
Mario Alonso Perez López (Male)


Statutory number of members Statutory number of members, as defined in the constitution or other fundamental law.
Principal mode of designation of members
Directly elected members Directly elected by citizens.
Current number of members Number of members who currently hold seats in parliament. May be lower or higher than the statutory number of members.
See historical data for this field. Compare data of this field.
Click for historical data
See historical data for this field.
Percentage of women Calculated by dividing the current number of women by the current number of members.
21.09% See historical data for this field.
Statutory number of members per country As defined in the constitution or other fundamental laws. Combines the number of parliamentarians in both chambers in bicameral parliaments.
Population (in thousands) Source: United Nations, World Population Prospects.
See historical data for this field.
Inhabitants per parliamentarian Calculated by dividing the population by the statutory number of parliamentarians.
70,008 See historical data for this field.


Data on the age of parliamentarians is collected at start of the legislature, following the most recent elections. This data is not updated during the legislature.


Reserved seats and quotas

There are reserved seats in parliament for certain groups Reserved seats are a means to ensure the parliamentary representation of certain groups in society.
Electoral quota for women Quotas to promote the representation of women in parliament.
The candidate lists of the political parties for the elections for the National Congress must include at least 40% women candidates. Candidate lists in single-member constituencies must include a female principal candidate and a male alternate, or vice versa. If a political party violates the gender balance, it will be charged a fine of 5% of the total state funding for the parties. (Source: https://www.idea.int/data-tools/data/gender-quotas )
Electoral quota for youth Quotas to promote the representation of youth in parliament.