Columbia subject headings:
Elections--Mexico.
Mexico--Politics and government--1988-2000.
Mexico. Congreso. Cámara de Diputados. Colegio Electoral.
Political campaigns--Mexico.
Presidents--Mexico--Election--1988.
Harvard subject headings:
Princeton subject headings:
Elections--Mexico.
Mexico--Politics and government--1988-2000.
Mexico. Congreso. Cámara de Diputados. Colegio Electoral
Political campaigns--Mexico.
Presidents--Mexico--Election--1988.