It's a branch of knowledge which deals with systems of governance and political analysis.

Politicsis a set of activities associated with the governance of a country or an area. It involves making decisions that apply to members of a group. It refers to achieving and exercising positions of governance—organized control over a human community, particularly a state. ...Politicsis a multifaceted word.

Political scienceis thestudy of politicsand power from domestic, international, and comparative perspectives. It entails understandingpoliticalideas, ideologies, institutions, policies, processes, and behavior, as well as groups, classes, government, diplomacy, law, strategy, and war.

Political scienceis asocial sciencewhich deals with systems of governance, and the analysis ofpoliticalactivities, political thoughts, and political behavior.[1]

Political science—occasionally called politicology—comprises numerous subfields, includingcomparative politics,political economy,international relations,political theory,public administration,public policy, andpolitical methodology. Furthermore, political science is related to, and draws upon, the fields ofeconomics,law,sociology,history,philosophy,geography,psychology/psychiatry,anthropologyandneurosciences.

Political scienceis asocial sciencewhich deals with systems of governance, and the analysis ofpoliticalactivities, political thoughts, and political behavior.[1]

Political science—occasionally called politicology—comprises numerous subfields, includingcomparative politics,political economy,international relations,political theory,public administration,public policy, andpolitical methodology. Furthermore, political science is related to, and draws upon, the fields ofeconomics,law,sociology,history,philosophy,geography,psychology/psychiatry,anthropologyandneurosciences.