Capital punishment in Mexico was officially abolished in 2005, having not been used in civil cases since 1937, and in military cases since 1961.
There is significant history of abolitionism in Mexico, dating back to the 19th century. Following the Plan of Ayutla, the 1857 constitution was drafted, which specifically outlawed the death penalty for political crimes, and allowed abolition for ordinary crimes in the future. Mexico's government at that time was quite unstable, and the express abolition of political crimes could have been linked to concern that the lawmakers themselves could become subject to the punishment if there was an uprising. Personal experiences too may have been a factor, as many Mexicans had experienced political repression. There was widespread condemnation of the death penalty in the media, and many Mexican literates were familiar with the work of Cesare, Marquis of Beccaria. Following the rule of Porfirio Díaz, the death penalty article was amended in the reform which led to the current Constitution of Mexico.
The last non-military execution in Mexico was in 1937, and the last military execution (of a soldier charged with insubordination and murder) was in 1961, so the official abolition of the military death penalty in 2005 and of the civil death penalty in 1976 lagged the de facto cessations by 68 and 15 years, respectively.
Mexico is a majority Roman Catholic country, with 88% of the population identifying themselves as Roman Catholic.The Vatican has made numerous statements criticizing capital punishment, and this may be a factor in the debate in Mexico.
The Mexican Drug War has fueled rising rates of violent crimes such as kidnapping and murder, prompting a reemergence of capital punishment into the political discourse. The Ecologist Green Party of Mexico (PVEM), the fourth biggest political force in the country, waged a campaign to promote restoration of the death penalty, including the use of billboards, as part of promotion of the party for the 2009 election for seats in Congress. There have been proposals to amend the 1917 Constitution to allow capital punishment from both the PVEM and the Institutional Revolutionary Party (PRI), but both were rejected. Although recent surveys have revealed that up to 70% of the population support the restoration of the death penalty, it is unlikely that the constitution will be changed, as both religious and human rights groups have strongly opposed restoration.