July
- 7/4: Elections in 14 states: Aguascalientes, Chihuahua, Durango, Hidalgo, Oaxaca, Puebla, Quintana Roo, Sinaloa, Tamaulipas, Tlaxcala, Veracruz, and Zacatecas (governors, congress, and mayors); Baja California (mayors and congress only); and Chiapas (congress only)
September
- 9/1: Presidential Informe; start of new congressional session
- 9/8: Deadline for presenting Budget to Congress
- 9/15: 200th Anniversary of Independence
October
- 10/20: Deadline for passing Revenue Law in Chamber
- 10/31: Deadline for passing Revenue Law in Senate
November
- 11/15: 100th Anniversary of the Revolution
- 11/15: Deadline for passing Expenditure Law
- 11/29 – 12/11: UN Climate Change Conference (COP16), Cancún
December
- 12/15: End of the congressional session
January 2011
- 1/30: Guerrero gubernatorial election
February
- 2/6: Baja California Sur elections
July
- 7/3: Elections in Coahuila, Mexico State, Nayarit, and Guerrero (mayors only)
October
- 10/2: Guerrero congress and mayoral elections
November
- 11/13: Michoacán elections
