# Mexican judicial and electoral reform developments > Live situation record from CLSTR: https://clstr.news/situations/mexican-judicial-and-electoral-reform-developments > Updated: 2026-08-20T02:50:57.000Z. Sources: 35. Developments: 3. Political and judicial shifts continue in Mexico following recent constitutional reforms. Olga Sánchez Cordero, a retired Supreme Court Justice and Morena federal deputy, has criticized the ‘Cuarta Transformación’ (4T) movement, stating it has “lost its rhythm and mode.” Having served in all three branches of government, she announced she will leave public service on August 31, 2027. She described the judicial reform as a “brutal, emotional shock,” specifically questioning the lottery system for selecting judges and the lack of requirements for high-level judicial experience. Regarding electoral reform, she warned that provisions allowing for the annulment of elections due to foreign interference lack clear definitions, potentially allowing for broad political interpretation. In a significant development within the electoral justice system, Mónica Soto Fregoso has resigned as a magistrate of the Superior Chamber of the Tribunal Electoral del Poder Judicial de la Federación (TEPJF). Her resignation, intended to “conclude a cycle” and fulfill personal commitments, was approved by the Permanent Commission of the Congress of the Union with 26 votes in favor (from Morena and its allies) and 5 against (from PAN, PRI, and Movimiento Ciudadano). Her departure, effective August 31, 2026, follows previous departures such as that of Janine Otálora Malassis. Opposition legislators criticized the resignation, arguing it lacks a serious underlying cause and noting controversial rulings made by Soto Fregoso. Conversely, supporters argued the move is necessary to align with the government’s vision of justice. Officials from the National Electoral Institute (INE) expressed concern that the vacancy leaves the Superior Chamber with only five of its seven members, potentially impacting gender parity and the body's ability to act as a balanced collegiate organ ahead of the 2026-2027 electoral process. ## Claims - Soto Fregoso was originally elected to a nine-year term that was set to end on October 31, 2025. (disputed by 9 sources) - Constitutional reforms had extended the terms of current magistrates until 2028. (disputed by 7 sources) - Mónica Soto Fregoso has resigned as a magistrate of the Superior Chamber of the TEPJF. (corroborated by 19 sources) - The resignation of Mónica Soto Fregoso will be effective on August 31, 2026. (corroborated by 19 sources) - Soto Fregoso cited a desire to close a professional cycle and fulfill family commitments as reasons for her departure. (corroborated by 19 sources) - Soto Fregoso joined the TEPJF as a magistrate on October 20, 2016. (corroborated by 14 sources) - The resignation was submitted to the Senate, addressed to Senate President Laura Itzel Castillo. (corroborated by 8 sources) - Soto Fregoso served as the president of the TEPJF between January 1, 2024, and October 31, 2025. (corroborated by 7 sources) - Mónica Soto Fregoso has a career spanning approximately 30 years in electoral justice. (corroborated by 6 sources) ## Timeline ### 2026-08-20: Mónica Soto Fregoso resigns as TEPJF magistrate Mexico's Permanent Commission approved the resignation of TEPJF magistrate Mónica Soto Fregoso, a move supported by Morena but criticized by opposition lawmakers as lacking serious cause. 2 sources. https://clstr.news/cluster/mnica-soto-fregoso-resigns-as-tepjf-magistrate-1 ### 2026-08-18: Mónica Soto Fregoso resigns as TEPJF magistrate Mónica Soto Fregoso has resigned as a TEPJF magistrate, effective August 31, 2026. The decision, approved by Congress, leaves the electoral tribunal with five of its seven seats filled. 32 sources. https://clstr.news/cluster/mnica-soto-fregoso-resigns-as-tepjf-magistrate ### 2026-08-12: Olga Sánchez Cordero criticizes Mexico's 4T movement and reforms Retired Supreme Court Justice Olga Sánchez Cordero criticized Mexico's judicial and electoral reforms, stating the 4T movement has “lost its rhythm and mode” as she prepares to exit public service in 2027. 2 sources. https://clstr.news/cluster/olga-snchez-cordero-criticizes-mexicos-4t-movement-and-reforms --- Cite as: Mexican judicial and electoral reform developments. CLSTR, https://clstr.news/situations/mexican-judicial-and-electoral-reform-developments