Legislative Politics in Latin America

By Scott Morgenstern; Benito Nacif | Go to book overview
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Executive–Legislative Relations: The Case
of Mexico (1946–1997)

Variance in the balance between the executive and the legislature has a major impact on democratic stability and on the presidential system's performance. In addition, in the case of Mexico a country that has recently moved into an environment of political plurality the changing relation and balance between the governmental branches may be of the utmost importance in drafting some of the aspects of the pending state reform.

Analyzing executive–legislative relations in Mexico poses certain difficulties that are not found in other case studies. First, there is the wide gap between formal and informal powers of the executive. Owing to the long dominance of the official party (the Partido Revolucionario Institucional, PRI), presidents in Mexico have been far more powerful than what one would gather from an analysis of only their constitutional prerogatives. I will show in this chapter that these extraordinary informal powers do have institutional roots. They derive, I argue, from the party and electoral systems and the incentives that these have created, not from the abuse of power or usurpation of powers by the presidency.

A second difficulty is posed by the fact that the Mexican political system is still moving. Most analysts date the liberalization of the political system to 1978, when the first serious electoral reform since 1963–1964 was enacted. Nonetheless, it was not until 1988 when the Chamber experienced the first profound change in its composition, a change that deprived the president's party from the two-thirds majority needed to alter the Constitution. Almost 10 years later and after 68 years of a long-standing hegemonic, quasi-single or overdominant party system, the 1997 congressional elections produced a much more plural system, in which control of the

I am indebted to Cecilia Martínez Gallardo for the research work done for this chapter.


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Legislative Politics in Latin America
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