 The 1924 presidential election was not a demonstration of free and fair elections, but the incumbent Obregón did not stand for re-election, thereby acknowledging that revolutionary principle, and he completed his presidential term still alive, the first since Porfirio Díaz.Candidate Calles embarked on the first populist presidential campaign in the nation's history, as he called for land redistribution and promised equal justice, more education, additional labor rights, and democratic governance.Calles tried to fulfill his promises during his populist phase (1924–26), and then began a repressive anti-Catholic phase (1926–28).