Columbia subject headings:
Mexico--Politics and government--2000-
Political parties--Mexico--History--21st century.
Right and left (Political science)--Mexico--History--21st century.
Harvard subject headings:
Mexico--Politics and government--2000-
Political parties--Mexico--History--21st century.
Right and left (Political science)--Mexico--History--21st century.
Princeton subject headings:
Mexico--Politics and government--2000-
Political parties--Mexico--History--21st century.
Right and left (Political science)--Mexico--History--21st century.