Political science – social science discipline concerned with the study of the state, government, and politics.
Comparative politics – field and a method used in political science, characterized by an empirical approach based on the comparative method.
Game theory – study of strategic decision making.
Ideology – set of ideas that constitute one's goals, expectations, and actions.
Political economy – Political economy originally was the term for studying production, buying, and selling, and their relations with law, custom, and government, as well as with the distribution of national income and wealth, including through the budget process. Political economy originated in moral philosophy. It developed in the 18th century as the study of the economies of states, polities, hence political economy.
Political psychology, bureaucratic, administrative and judicial behaviour –
Psephology – branch of political science which deals with the study and scientific analysis of elections.
Voting systems – methods by which voters make a choice between options, often in an election or on a policy referendum.
Public administration – houses the implementation of government policy and an academic discipline that studies this implementation and that prepares civil servants for this work.
Public policy – generally the principled guide to action taken by the administrative or executive branches of the state with regard to a class of issues in a manner consistent with law and institutional customs.
Local government studies – form of public administration which in a majority of contexts, exists as the lowest tier of administration within the a given state.