Marco Antonio Ávila García was murdered prior to the Mexican general election, 2012, which is where voters went to do what?
Marco Antonio Ávila García:  Garcia was the fifth journalist killed in 2012 in Mexico, which has become one of the most dangerous countries for journalists, and his murder preceded the 1 July 2012 Mexican elections, in which drug violence had become a major issue. Mexican general election, 2012:  Voters went to the polls to elect, on the federal level:
to elect, on the federal level