[1] Elections for governor were held in Aguascalientes, Chiapas, Chihuahua, Durango, Hidalgo, Oaxaca, Puebla, Quintana Roo, Sinaloa, Tamaulipas, Tlaxcala, Veracruz and Zacatecas.
[1] The incumbent government of Institutional Revolutionary Party (PRI) Governor Ulises Ruiz Ortiz was seen as increasingly repressive and corrupt by voters and political observers.
Ruiz was also believed to be linked to Oaxacan paramilitary groups[1] which are responsible to violence and deaths in rural areas of Oaxaca.
[1] A party alliance between the state's largest vote winner, the Peace and Progress Coalition led by Gabino Cue, ousted the PRI from power.
[1] The gubernatorial election in Tamaulipas was marred by the violent assassination of the leading PRI candidate, Rodolfo Torre Cantú, and four members of his campaign on June 28, 2010.