The Congress of Mexico City (Spanish; Castilian: Congreso de la Ciudad de México) is the legislative branch of government of Mexico City. Between 1988 and 1997, it was known as the Assembly of Representatives of the Federal District (Spanish; Castilian: Asamblea de Representantes del Distrito Federal|links=no), and between 1997 and 2018, it was styled the Legislative Assembly of the Federal District (Spanish; Castilian: Asamblea Legislativa del Distrito Federal|links=no.[1] During those earlier periods it had reduced powers with respect to the current body.
Congress consists of 66 deputies, of which 40 are elected by the first-past-the-post system or FPP and 26 by proportional representation or PR.
From 2003 to 2006.
| Party | PR | Total by party | ||
|---|---|---|---|---|
| Party of the Democratic Revolution | 37 | 0 | 37 | |
| National Action Party | 3 | 13 | 16 | |
| Institutional Revolutionary Party | 0 | 7 | 7 | |
| Green Ecological Party of Mexico | 0 | 5 | 5 | |
| Independent | 0 | 1 | 1 | |
From 2006 to 2009.
| Party | PR | Total by party | ||
|---|---|---|---|---|
| Party of the Democratic Revolution | 34 | 0 | 34 | |
| National Action Party | 4 | 13 | 17 | |
| Institutional Revolutionary Party | 0 | 4 | 4 | |
| 0 | 4 | 4 | ||
| Green Ecological Party of Mexico | 0 | 3 | 3 | |
| 0 | 2 | 2 | ||
| 0 | 1 | 1 | ||
| 0 | 1 | 1 | ||
From 2012 to 2015.
From 2015 to 2018.[2]
In 1987, the federal government decided the creation of an Assembly of Representatives (Spanish; Castilian: Asamblea de Representantes) of the Federal District. This assembly, elected by the inhabitants of the Federal District, had limited legislative powers. Nonetheless, it was the first time since 1928 that the inhabitants of the Federal District recovered some oversight over their local affairs. Eventually, in 1993, full home rule was granted to the Federal District by the federal government, with the creation of an elected Head of Government of the Federal District and a great expansion of the legislative powers of the Assembly of Representatives of the Federal District, which was also renamed the Legislative Assembly.
The first session of the Legislative Assembly of the Federal District ran from 1997 to 2000. Since its installation the Legislative Assembly has been renewed three times.