This article attempts to illuminate some institutional features of the
past and the current electoral systems of Argentina and the problemat
ic relationship between these characteristics and the trend of changes
that the party system has been experiencing since the return of democ
racy in 1983. The focus is on the dangers of political stalemate that
might have developed if the institutional arrangements implemented at
the end of the military rule had not been reformed subsequently. The s
tudy has two objectives: (a) to demonstrate that there is a trend towa
rds an increasing fractionalization of the Argentine party system; and
(b) to show that the combination of an electoral college with a major
ity requirement, proportional representation to allocate presidential
electors, malapportionment among districts, and this increasing proces
s of pluralization in most provinces (where presidential elections wer
e decided because of electoral college complexities) threatened the st
ability of democracy. Copyright (C) 1996 Elsevier Science Ltd.