The congresses of the federal entities of Mexico are the depositary bodies of the legislative power in the thirty-one states and Mexico City. Conformed as unicameral assemblies, they are composed of deputies elected under the principles of relative majority and by proportional representation, in accordance with the specific regulations of local laws, but following the general bases of the federal constitution. All states, including Mexico City, use the presidential system form of government.
Its members are elected by universal vote under the two principles already mentioned; the former directly and the others according to the multi-member list system established by federal law. The term of office is three years with the option of immediate reelection, as long as it is representing the party or coalition that originally nominated the deputy.
For each titular deputy, an alternate is elected; This being the one who will make up for the temporary or permanent absences of his running mate. Its characteristics and general bases are supported by section II of article 116 of the Political Constitution of the United Mexican States.
The legislative powers and capacities of these institutions are framed in those policies in which the states are autonomous (internal regime, budget, income, social development, public security, prosecution and administration of justice) that are not contemplated in the federal order and that are not exclusively awarded to the Congress of the Union, so that each state has their own legislature whereby laws affecting the state are made.
List of congresses
+CongressDeputiesCreation dateFPTPPRTotalCongress of Aguascalientes18 (67%)9 (33%)27November 8, 1846Congress of Baja California17 (68%)8 (32%)25November 30, 1953Congress of Baja California Sur16 (76%)5 (24%)21November 25, 1974Congress of Campeche21 (60%)14 (40%)35March 2, 1861 Congress of Chiapas24 (60%)16 (40%)40January 5, 1865Congress of Chihuahua22 (67%)11 (33%)33September 4, 1823Congress of Mexico City33 (50%)33 (50%)66September 17, 2018Congress of Coahuila16 (64%)9 (36%)25August 15, 1824Congress of Colima16 (64%)9 (36%)25July 19, 1857 Congress of Durango15 (60%)10 (40%)25July 20, 1827Congress of Guanajuato22 (61%)14 (39%)36March 25, 1824Congress of Guerrero28 (61%)18 (39%)46January 30, 1850Congress of Hidalgo18 (60%)12 (40%)30May 16, 1869Congress of Jalisco20 (53%)18 (47%)38September 8, 1823Congress of the State of Mexico45 (60%)30 (40%)75March 2, 1824Congress of Michoacán24 (60%)16 (40%)40April 6, 1824Congress of Morelos12 (60%)8 (40%)20July 28, 1869Congress of Nayarit18 (60%)12 (40%)30December 25, 1917Congress of Nuevo León26 (62%)16 (38%)42August 1, 1824Congress of Oaxaca25 (60%)17 (40%)42July 1, 1823Congress of Puebla26 (63%)15 (37%)41March 19, 1824Legislature of Querétaro15 (60%)10 (40%)25February 12, 1824Congress of Quintana Roo15 (60%)10 (40%)25November 25, 1974Congress of San Luis Potosí15 (56%)12 (44%)27April 21, 1824Congress of Sinaloa24 (60%)16 (40%)40March 13, 1831Congress of Sonora21 (64%)12 (36%)33September 19, 1824Congress of Tabasco21 (60%)14 (40%)35May 3, 1824Congress of Tamaulipas22 (61%)14 (39%)36May 7, 1824Congress of Tlaxcala15 (60%)10 (40%)25June 1, 1857Congress of Veracruz30 (60%)20 (40%)50May 9, 1824Congress of Yucatán21 (60%)14 (40%)35August 20, 1823Congress of Zacatecas18 (60%)12 (40%)30October 19, 1823Total6794441123—
Composition by political parties +Composition of state congresses as of 2025 State Localparties Total Independentor no party Aguascalientes 2024−2027 15 1 2 - 1 1 7 - – 27 Baja California 2024−2027 3 1 - 1 2 1 14 2 1 25 Baja California Sur 2024−2027 1 1 - 7 1 – 9 2 – 21 Campeche 2024−2027 2 3 - 2 2 10 16 – - 35 Chiapas 2024−2027 1 3 - 6 9 1 17 3 – 40 Chihuahua 2024−2027 12 4 - 1 1 2 12 - 1 33 Mexico City 2024−2027 15 2 2 4 10 3 24 - 6 66 Coahuila 2024−2026 5 10 2 1 1 - 5 1 – 25 Colima 2024−2027 2 3 - 3 3 2 11 1 - 25 Durango 2024−2027 5 7 - - 2 1 10 – – 25 Guanajuato 2024−2027 16 3 1 1 2 2 11 – - 36 Guerrero 2024−2027 1 6 4 4 6 2 23 - – 46 Hidalgo 2024−2027 1 2 1 2 2 2 16 4 - 30 Jalisco 2024−2027 5 3 - 2 2 11 9 5 1 38 State of Mexico 2024−2027 7 7 2 9 9 4 36 - 1 75 Michoacán 2024−2027 4 2 3 5 6 2 14 – 4 40 Morelos 2024−2027 4 1 - 2 1 1 10 1 - 20 Nayarit 2024−2027 3 1 - 4 4 – 15 3 - 30 Nuevo León 2024−2027 10 10 1 1 1 9 9 - 1 42 Oaxaca 2024−2027 - 1 - 3 3 1 28 3 3 42 Puebla 2024−2027 5 1 - 6 7 1 17 4 – 41 Querétaro 2024−2027 7 1 - 1 2 2 10 – 2 25 Quintana Roo 2024−2027 2 1 - 3 5 1 13 – – 25 San Luis Potosí 2024−2027 4 2 - 4 9 1 6 1 - 27 Sinaloa 2024−2027 2 3 - 1 6 2 24 2 – 40 Sonora 2024−2027 1 2 1 4 4 2 11 6 2 33 Tabasco 2024−2027 - 1 4 3 3 3 21 – – 35 Tamaulipas 2024−2027 7 1 - 1 1 2 24 – – 36 Tlaxcala 2024−2027 1 1 2 2 3 - 11 5 - 25 Veracruz 2024−2027 4 - - 2 5 2 34 - 3 50 Yucatán 2024−2027 12 2 - 1 1 2 17 – - 35 Zacatecas 2024−2027 4 4 3 2 3 2 11 1 - 30 Total – 161 90 28 88 117 75 495 44 25 1123
Totals by political parties (2025) PartyNumber of state legislators Morena PAN PVEM PRI PT MC Local parties PRD Independent or no party
See also List of current state governors in Mexico State governments of Mexico List of political parties in Mexico
References
External links Directory of state congresses