This article emphasizes the key role of labor in shaping trends and pattern
s of pica change. The first section of the article argues that during the i
nterwar period, continental Latin America experienced common trends in seve
ral areas, including a general upsurge in labor unrest, deepening conflicts
among elites, the implementation of new modes of state regulation, and a d
isruption of prevailing trade arrangements within the world economy, all of
which were accompanied by a brief but significant wave of democratization
in the 1920s. Noting that these general trends were unevenly distributed th
rough the region (particularly after the 1930s), the second section of the
article proceeds to abstract four patterns of political arrangements (repre
ssive dictatorships, party competition, corporatist nationalism, and unstab
le labor politics). The article uses two principal variables (the relative
weight of the middle and working classes and the degree of cohesion/fragmen
tation among elites) to explain these patterns of political change. Overall
, the article suggests that the relative strength of labor and subordinate
groups was key to shifts away from repressive dictatorship, while the degre
e of convergence among elites was significant in shaping political outcomes
, but not in promoting democratic outcomes.