Columbia subject headings:
Elections--Brazil--History--21st century.
Elections--El Salvador--History--21st century.
Elections--Latin America--History--21st century.
Elections--Mexico--History--21st century.
Latin America--Politics and government--21st century.
Harvard subject headings:
Princeton subject headings:
Brazil--Politics and government--2003-
El Salvador--Politics and government--1992-
Mexico--Politics and government--2000-
Presidents--Brazil--Election--2018.
Presidents--El Salvador--Election--2019.
Presidents--Mexico--Election--2018.