Political Science is an academic and research discipline that
deals with the theory and practice of politics and the description
and analysis of political systems and political behavior.
Fields and subfields of political science include political theory
and philosophy, political concepts, political systems and ideology,
game theory, psephology (voting systems and electoral behaviour),
political economy, geopolitics and political geography, policy
studies and public policy analysis, comparative politics, national
systems, cross-national political analysis, supranational and
intergovernmental politics, globalisation studies, political
development, international relations, foreign policy analysis,
peace studies, international law and politics, public
administration and local government studies, political psychology,
bureaucratic, administrative and judicial behaviour, legislative
processes and public law. Political Science also studies power in
international relations and the theory of Great powers and
Superpowers. 
From wiki.
