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The LXVI Legislature of the Congress of the Union (66th Congress) is the current session of the legislative branch of Mexico, composed of the Chamber of Deputies and the Senate of the Republic. It convened on 1 September 2024, and will end on 31 August 2027,[1] covering the final month of Andrés Manuel López Obrador's term in office and the first three years of Claudia Sheinbaum's presidency.
66th Congress (LXVI Legislatura) | |||||
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Overview | |||||
Legislative body | Congress of the Union | ||||
Term | 1 September 2024 – 31 August 2027 | ||||
Election | 2 June 2024 | ||||
Senate | |||||
Members | 128 senators | ||||
President |
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Chamber of Deputies | |||||
Members | 500 deputies | ||||
President |
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Both chambers of Congress were elected in the 2024 general election. There were three competing forces: the Sigamos Haciendo Historia coalition, consisting of the National Regeneration Movement (Morena), the Labor Party (PT), and the Ecologist Green Party of Mexico (PVEM); the Fuerza y Corazón por México coalition, comprising the National Action Party (PAN), the Institutional Revolutionary Party (PRI), and the Party of the Democratic Revolution (PRD); and the Citizens' Movement (MC), the only party to run without allies.
Sigamos Haciendo Historia won a supermajority in the Chamber of Deputies. The coalition fell three seats short of a supermajority in the Senate, but defections by the two senators elected for the PRD on 28 August closed the shortfall to one.[2] The supermajority was ultimately secured with the defection to Morena of Cynthia López, elected for the PRI in Mexico City, on 12 November.[3]
These tables relate to the composition of the Senate of the Republic and the Chamber of Deputies at the start of the LXVI Legislature and their current makeup, highlighting the changes in party affiliation that have occurred during the legislature.
Party | Start of Legislature |
Current seats |
± | |
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National Regeneration Movement | 66 | 66 | ||
National Action Party | 22 | 21 | 1 | |
Institutional Revolutionary Party | 15 | 14 | 1 | |
Ecologist Green Party of Mexico | 13 | 14 | 1 | |
Labor Party | 6 | 6 | ||
Citizens' Movement | 5 | 5 | ||
Independents / No party | 1 | 2 | 1 | |
Total | 128 | 128 |
Party | Start of Legislature[13] |
Current seats |
± | |
---|---|---|---|---|
National Regeneration Movement | 257 | 253 | 4 | |
National Action Party | 71 | 71 | ||
Ecologist Green Party of Mexico | 60 | 62 | 2 | |
Labor Party | 47 | 49 | 2 | |
Institutional Revolutionary Party | 36 | 37 | 1 | |
Citizens' Movement | 27 | 27 | ||
Independents / No party | 1 | 1 | ||
Party of the Democratic Revolution | 1 | 0 | 1 | |
Total | 500 | 500 |
Session | Term | Portrait | Name | Party | |
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1 | 1 September 2024 – Incumbent |
Gerardo Fernández Noroña[14] | National Regeneration Movement |
Session | Term | Portrait | Name | Party | |
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1 | 1 September 2024 – 5 October 2024 |
Ifigenia Martínez y Hernández[15] | National Regeneration Movement | ||
8 October 2024[a] – Incumbent |
Sergio Gutiérrez Luna[8] |
Party | Senate | Chamber of Deputies | |||
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National Action Party | Guadalupe Murguía Gutiérrez[16] | since 2024 | Noemí Luna Ayala[17] | since 2024 | |
Institutional Revolutionary Party | Manuel Añorve Baños[18] | since 2024 | Rubén Moreira Valdez[19] | since 2024 | |
Labor Party | Alberto Anaya[20] | since 2024 | Reginaldo Sandoval Flores[20] | since 2024 | |
Ecologist Green Party of Mexico | Manuel Velasco Coello[21] | since 2024 | Carlos Alberto Puente Salas[21] | since 2024 | |
Citizens' Movement | Clemente Castañeda Hoeflich[22] | since 2024 | Ivonne Ortega Pacheco[22] | since 2024 | |
National Regeneration Movement | Adán Augusto López[23] | since 2024 | Ricardo Monreal[24] | since 2024 |
In the list, the first two positions represent the senators from the winning two-name formula who secured a majority in the state. The third corresponds to the senator who earned a seat through first minority.
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AguascalientesBaja California
Baja California SurCampecheChiapas
Chihuahua
Mexico City
Coahuila
Colima
DurangoGuanajuato
Guerrero
HidalgoJalisco
Mexico
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Michoacán
MorelosNayaritNuevo León
Oaxaca
Puebla
QuerétaroQuintana RooSan Luis Potosí
Sinaloa
SonoraTabasco
Tamaulipas
Tlaxcala
Veracruz
YucatánZacatecas
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First electoral region
Fourth electoral region
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Second electoral region
Fifth electoral region
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Third electoral region
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