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]
10 September 2024: Protesters opposing the judicial reform bill storm the Senate building, temporarily halting the session discussing the reforms.[4] The Senate reconvenes in its former premises and passes the bill by an 86–41 vote at around 04:00 CST the following morning.[5]
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.
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.
^In Campeche: Before the 2024 election, Eliseo Fernández Montufar's candidacy was revoked due to an active arrest warrant.[18] Citizens' Movement's formula secured a seat through first minority, with his alternate, Daniel Barreda Pavón, becoming the senator-elect.[19]
^Saucedo Reyes was elected for the PRD as part of the Fuerza y Corazón por México coalition but switched allegiance to Morena on 28 August 2024.[2][20]
^Herrera Dagdug was elected for the PRD as part of the Fuerza y Corazón por México coalition but switched allegiance to Morena on 28 August 2024.[2][20]
^Yunes Márquez was granted a leave of absence on health grounds on 10 September 2024 and Miguel Ángel Yunes Linares was sworn in as his alternate.[23] Later the same day, however, Yunes Márquez returned to his seat.[24]
^Héctor Melesio Cuén Ojeda had been assigned a seat through proportional representation but was murdered on 25 July 2024, before the start of the legislature.[27] His alternate, Juan Moreno de Haro, took his place.[28]
^Querétaro, Karen Munguía / Diario de. "Murguía: seremos oposición y opción". Diario de Querétaro | Noticias Locales, Policiacas, de México, Querétaro y el Mundo (in Spanish). Retrieved 2024-08-29.