With the consolidation of "Presidencialismo" (the political era following the Mexican Revolution) and the success of electronic mass-media, the "corrido" lost its primacy as a mass communication form, becoming part of a folklorist cult in one branch and, in another, the voice of the new subversives: oppressed workers, drug growers or traffickers, leftist activists and emigrated farmworkers (mainly to the United States). This is what scholars designate as the "decaying" stage of the genre, which tends to erase the stylistic or structural characteristics of "revolutionary" or traditional "corrido" without a clear and unified understanding of its evolution. This is mainly signified by the "narcocorrido", many of which are egocentric ballads paid for by drug smugglers to anonymous and almost illiterate composers (more about this assertion here l), but with others coming from the most popular norteño and banda artists and written by some of the most successful and influential ranchera composers.