Why do the left fail? Is the Mexican left a total failure? In this issue of the weekly "La Quincena", various analysts offer their position regarding the prospects represented by the federal government of MORENA, the Fourth Transformation and Andrés Manuel López Obrador. The Institutional Revolutionary Party (PRI) was a confederation of caciques and political factions where the left and revolutionary nationalism played a leading role. The ruptures and the turncoat of the Official Party allowed the left and right to have serious opportunities to govern beyond the municipalities and to legislate beyond the multi-member representation. Now is the time for the left, what future awaits you? The reduction of uncertainty is achieved with a fair reading of those who participate in this work. 3 Index 4 Why does the left fail? Samuel Schmidt 8 The left in the long time and the short time: a success story, defeats and failures Joan del Alcàzar 13 Why does the left fa...