Political science as a study of political behavior:
In the present times, i.e. since World War II, Political Science is flounced by such dynamic concepts as political process, systems analysis, etc., which have now become part of Political Science. It has become a behavioral science also.
Political Science as a study of individual liberty and rights:
A mere study of the State, government and law, though very important parts of the political study, is not enough. Political Science also studies individual liberty. It considers the problems of adjusting political authority to individual liberty, the relations among men, and their relations to the State. It also deals with the rights and duties of the citizens towards one another and towards the State.