Political science is a social science with the theory and practice of politics and the description and analysis of political systems and political behavior. Political scientists "see themselves engaged in revealing the relationships underlying political events and conditions. And from these revelations they attempt to construct general principles about the way the world of politics work." Political science intersects with other fields; including public policy, national politics, economics, international relations, comparative politics, psychology, sociology, history, law, and political theory.
Political science is methodologically diverse and appropriates many methods originating in social research. Approaches include positivism, interpretivism, rational choice theory, behavioral, structuralism, post-structuralism, realism, institutionalism, and pluralism. Political science, as one of the social sciences, uses methods and techniques that relate to the kinds of inquiries sought: primary sources such as historical documents and official records, secondary sources such as scholarly journal articles, survey research, statistical analysis, case studies, and model building.
"As a discipline" political science, possibly like the social sciences as a whole, "lives on the fault line between the 'two cultures' in the academy, the sciences and the humanities." Thus, in some American colleges where there is no separate School or College of Arts and Sciences per se, political science may be a separate department housed as part of a division or school of Humanities or Liberal Arts. Whereas classical political philosophy is primarily defined by a concern for Hellenic and Enlightenment thought, political scientists are broadly marked by a greater concern for "modernity" and the contemporary nation state, and as such share a greater deal of terminology with sociologists (e.g. structure and agency).
Political scientists study matters concerning the allocation and transfer of power in decision making, the roles and systems of governance including governments and international organizations, political behaviour and public policies. They measure the success of governance and specific policies by examining many factors, including stability, justice, material wealth, and peace. Some political scientists seek to advance positive (attempt to describe how things are, as opposed to how they should be) theses by analysing politics. Others advance normative theses, by making specific policy recommendations.
Political scientists provide the frameworks from which journalists, special interest groups, politicians, and the electorate analyse issues. According to Chaturvedy, "...Political scientists may serve as advisers to specific politicians, or even run for office as politicians themselves. Political scientists can be found working in governments, in political parties or as civil servants. They may be involved with non-governmental organizations (NGOs) or political movements. In a variety of capacities, people educated and trained in political science can add value and expertise to corporations. Private enterprises such as think tanks, research institutes, polling and public relations firms often employ political scientists." In the United States, political scientists known as "Americanists" look at a variety of data including elections, public opinion and public policy such as Social Security reform, foreign policy, US Congressional committees, and the US Supreme Court — to name only a few issues.
Most United States colleges and universities offer B.A. programs in political science. M.A. or M.A.T. and Ph.D. or Ed.D. programs are common at larger universities. The term political science is more popular in North America than elsewhere; other institutions, especially those outside the United States, see political science as part of a broader discipline of political studies, politics, or government. While political science implies use of the scientific method, political studies implies a broader approach, although the naming of degree courses does not necessarily reflect their content. Separate degree granting programs in international relations and public policy are not uncommon at both the undergraduate and graduate levels. Master's level programs in political science are common while political scientists engage in public administration.
The national honour society for college and university students of government and politics in the United States is Pi Sigma Alpha.
Political science is a late arrival in terms of social sciences. However, the discipline has a clear set of antecedents such as moral philosophy, political philosophy, political economy, political theology, history, and other fields concerned with normative determinations of what ought to be and with deducing the characteristics and functions of the ideal state. In each historic period and in almost every geographic area, we can find someone studying politics and increasing political understanding.
The antecedents of Western politics can trace their roots back to Plato (427–347 BC) and Aristotle (384–322 BC), particularly in the works of Homer, Hesiod, Thucydides, Xenophon, and Euripides. Later, Plato analysed political systems, abstracted their analysis from more literary- and history- oriented studies and applied an approach we would understand as closer to philosophy. Similarly, Aristotle built upon Plato's analysis to include historical empirical evidence in his analysis. Plato wrote The Republic and Aristotle wrote the Politics.
During the height of the Roman Empire, famous historians such as Polybius, Livy and Plutarch documented the rise of the Roman Republic, and the organization and histories of other nations, while statesmen like Julius Caesar, Cicero and others provided us with examples of the politics of the republic and Rome's empire and wars. The study of politics during this age was oriented toward understanding history, understanding methods of governing, and describing the operation of governments. Nearly a thousand years elapsed, from the foundation of the city of Rome in 753 BC to the fall of the Roman empire or the beginning of the Middle Ages. In the interim, there is a manifest translation of Hellenic culture into the Roman sphere. The Greek gods become Romans and Greek philosophy in one way or another turns into Roman law e.g. Stoicism. The Stoic was committed to preserving proper hierarchical roles and duties in the state so that the state as a whole would remain stable. Among the best known Roman Stoics were philosopher Seneca and the emperor Marcus Aurelius. Seneca, a wealthy Roman patrician, is often criticized by some modern commentators for failing to adequately live by his own precepts. The Meditations of Marcus Aurelius, on the other hand, can be best thought of as the philosophical reflections of an emperor divided between his philosophical aspirations and the duty he felt to defend the Roman Empire from its external enemies through his various military campaigns. According to Polybius, Roman institutions were the backbone of the empire but Roman law is the medulla.
With the fall of the Western Roman Empire, there arose a more diffuse arena for political studies. The rise of monotheism and, particularly for the Western tradition, Christianity, brought to light a new space for politics and political action. Works such as Augustine of Hippo's The City of God synthesized current philosophies and political traditions with those of Christianity, redefining the borders between what was religious and what was political. During the Middle Ages, the study of politics was widespread in the churches and courts. Most of the political questions surrounding the relationship between church and state were clarified and contested in this period. The Arabs lost sight of Aristotle's political science but continued to study Plato's Republic which became the basic text of Judeo-Islamic political philosophy as in the works of Alfarabi and Averroes; this did not happen in the Christian world, where Aristotle's Politics was translated in the 13th century and became the basic text as in the works of Saint Thomas Aquinas.
In ancient India, the antecedents of politics can be traced back to the Rig-Veda, Samhitas, Brahmanas, the Mahabharata and Buddhist Pali Canon. Chanakya (c. 350-275 BC) was a political thinker in Takshashila. Chanakya wrote the Arthashastra, a treatise on political thought, economics and social order, which can be considered a precursor to Machiavelli's The Prince. It discusses monetary and fiscal policies, welfare, international relations, and war strategies in detail, among other topics. The Manusmriti, dated to about two centuries after the time of Chanakya is another important political treatise of ancient India.
Ancient China was home to several competing schools of political thought, most of which arose in the Spring and Autumn Period. These included Mohism (a utilitarian philosophy), Taoism, Legalism (a school of thought based on the supremacy of the state), and Confucianism. Eventually, a modified form of Confucianism (heavily infused with elements of Legalism) became the dominant political philosophy in China during the Imperial Period. This form of Confucianism also deeply influenced and was expounded upon by scholars in Korea and Japan.
In Persia, works such as the Rubaiyat of Omar Khayyam and Epic of Kings by Ferdowsi provided evidence of political analysis, while the Middle Eastern Aristotelians such as Avicenna and later Maimonides and Averroes, continued Aristotle's tradition of analysis and empiricism, writing commentaries on Aristotle's works. Averroe did not have at hand a text of Aristotle's Politics, so he wrote a commentary on Plato's Republic instead.
During the Italian Renaissance, Niccolò Machiavelli established the emphasis of modern political science on direct empirical observation of political institutions and actors. For Machiavelli, nothing seems to be neither too good nor too evil if it helps to attain and preserve political power. Machiavelli shatters political illusions, reveals the harsh reality of politics and could be considered the father of the politics model. Later, the expansion of the scientific paradigm during the Enlightenment further pushed the study of politics beyond normative determinations.
Like Machiavelli, Thomas Hobbes, well-known for his theory of the social contract, believed that a strong central power, such as a monarchy, was necessary to rule the innate selfishness of the individual but neither of them believed in the divine right of kings. John Locke, on the other hand, who gave us Two Treatises of Government and who did not believe in the divine right of kings either, sided with Aquinas and stood against both Machiavelli and Hobbes by accepting Aristotle's dictum that man seeks to be happy in a state of social harmony as a social animal. Unlike Aquinas' preponderant view on the salvation of the soul from original sin, Locke believed man comes into this world with a mind that is basically tabula rasa. According to Locke, an absolute ruler as proposed by Hobbes is unnecessary, for natural law is based on reason and equality, seeking peace and survival for man.
Religion would no longer play a dominant role in politics. There would be separation of church and state. Principles similar to those that dominated the material sciences could be applied to society as a whole, originating the social sciences. Politics could be studied in a laboratory as it were, the social milieu. In 1787, Alexander Hamilton wrote: "...The science of politics like most other sciences has received great improvement." (The Federalist Papers Number 9 and 51). Both the marquis d'Argenson and the abbé de Saint-Pierre described politics as a science; d'Argenson was a philosopher and de Saint-Pierre an allied reformer of the enlightenment.
Other important figures in American politics who participated in the Enlightenment were Benjamin Franklin and Thomas Jefferson.
Since Political Science is essentially a study of human behaviour, in all aspects of politics, observations in controlled environments are usually not available and impossible to reproduce or duplicate. Because of this, political scientists seek patterns in the reasons and outcomes for political events so that generalizations and theories can be made. Again, study is still difficult since humans make conscious choices unlike other subjects in science, such as organisms, or even inanimate objects as in physics. Despite the complexities, consensus has been reached on various political topics with the help of proper study. To the extent that political scientists are not politicians, they can demonstrate a greater objectivity about politics. Politics may be studied as an activity, as current affairs, as the work of government and as conflict, either national or international, and its early solution.
The advent of political science as a university discipline was marked by the creation of university departments and chairs with the title of political science arising in the late 19th century. In fact, the designation "political scientist" is typically reserved for those with a doctorate in the field. Integrating political studies of the past into a unified discipline is ongoing, and the history of political science has provided a rich field for the growth of both normative and positive political science, with each part of the discipline sharing some historical predecessors. The American Political Science Association was founded in 1903 and the American Political Science Review was founded in 1906 in an effort to distinguish the study of politics from economics and other social phenomena.
In the 1950s and the 1960s, a behavioural revolution stressing the systematic and rigorously scientific study of individual and group behaviour swept the discipline. The late 1960s and early 1970s witnessed a take-off in the use of deductive, game theoretic formal modelling techniques aimed at generating a more analytical corpus of knowledge in the discipline. This trend has continued and accelerated, even as the behaviouralist revolution has subsided. At the same time, due to the interdependence of all social life, political science also moved towards a closer working relationship with other disciplines, especially sociology, economics, history, anthropology, psychology, public administration, law, and statistics without losing its own identity.
Increasingly, political scientists have used the scientific method to create an intellectual discipline based on the generation of formal models used to derive testable hypotheses followed by empirical verification. Over the past generations, the discipline placed an increasing emphasis on relevance and the use of new approaches to increase scientific knowledge in the field and provide explanations for empirical outcomes.
In modern times as well, political science in the form of research towards other forms of unique government such as those displayed on the internet or theoretical scenarios.