The question of whether Political Science is a science is something scholars have debated for many years. To answer this, we first need to understand
Is Political Science a Science? A Deep Dive Through the Eyes of History's Greatest Thinkers
Have you ever stopped to wonder whether political science truly deserves the word "science" in its name? It's a question that has sparked fiery debates in university halls, government offices, and academic journals for well over a century. Some scholars passionately argue that politics can be studied with the same rigorous methods as physics or chemistry. Others shake their heads and insist that human behavior is far too messy, unpredictable, and value-laden to ever fit into a scientific framework. So who's right? Let's embark on an engaging journey through the minds of some of history's most influential political thinkers to find out where this debate stands and why it matters so much to how we understand the world around us.
The Burning Question: What Makes Something "Scientific" Anyway?
Before we dive into the great debate, let's get clear on what we're actually arguing about. When people ask "Is political science a science?" they're really asking whether the study of politics can meet the same standards that we expect from natural sciences like biology, physics, or chemistry. These standards typically include:
- Systematic observation of the world rather than casual guessing
- Objective measurement that different researchers can agree on
- Testable hypotheses that can be proven true or false
- Replicable results that hold up across different times and places
- General laws that predict how things will behave under certain conditions
The challenge? Politics involves human beings — complex creatures driven by emotions, values, cultural backgrounds, and unpredictable choices. Can we really study people the same way we study atoms or chemical reactions? This tension sits at the heart of our entire discussion.
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The Early Pioneers: Machiavelli and the Birth of Political Realism
Let's start our journey in Renaissance Italy with a man who fundamentally changed how we think about studying politics. Niccolò Machiavelli (1469–1527) is often called the father of modern political science, and for good reason. Before Machiavelli came along, most political thinkers were busy imagining ideal states — perfect societies that existed only in their minds. Plato's "Republic" is the classic example: a beautiful philosophical construction that never actually existed anywhere on Earth.
Machiavelli flipped this approach completely on its head. He insisted that useful political knowledge had to come from observable reality, not from idealized fantasies. His famous work The Prince opens with a direct attack on thinkers who "have imagined republics and principalities that never really existed or been known to exist." Instead, Machiavelli wanted to know what actually worked in the real world of power politics.
His method was remarkably scientific for someone writing in the early 1500s. From 1498 to 1512, Machiavelli served as Second Chancellor of the Florentine Republic, which gave him front-row seats to European power politics. He negotiated with figures like Cesare Borgia, King Louis XII of France, and Pope Julius II — watching these rulers operate gave him what scholars describe as an almost laboratory-like understanding of how power is won, used, and lost.
But Machiavelli didn't just observe contemporary politics. He combined this with systematic historical analysis, particularly studying ancient Rome through Livy's histories. He believed that human nature remains constant across time, which meant that similar situations tend to produce similar outcomes. This assumption allowed him to treat history as a source of general rules about political behavior — a fundamentally scientific move.
Perhaps most importantly, Machiavelli made the bold decision to separate politics from ethics. In the classical tradition running from Aristotle onward, politics was treated as a branch of ethics. Machiavelli was the first major theorist to divorce politics from moral judgment, studying what rulers actually do rather than what they should do. This methodological choice — setting aside values to focus on facts — anticipates the modern scientific ideal of value-free inquiry.
However, critics have rightly questioned how "scientific" Machiavelli really was. Some scholars note that he selected historical examples to support conclusions he had already reached, rather than letting evidence lead him to neutral findings. Others point out that his works are scattered and unsystematic rather than building a rigorous, unified theory. The philosopher Isaiah Berlin documented how interpreters have wildly disagreed: some praise Machiavelli as a morally neutral analyst who anticipated modern scientific methods, while others see him as a passionate patriot writing with urgent political purpose.
Despite these limitations, Machiavelli's influence on the scientific aspirations of political science is undeniable. His insistence on observable facts over abstract ideals laid groundwork for the realist school in international relations. His empirical focus is seen as an ancestor of twentieth-century behavioralism, which studied politics through measurable behavior. The pragmatic, power-centered outlook of Realpolitik traces its intellectual roots directly back to him.
The German Tradition: Max Weber and the Ideal of Value-Free Science
Fast forward several centuries to Max Weber (1864–1920), one of the most influential social scientists ever to grapple with the science question. Weber's contribution centers on his concept of Wertfreiheit — a German term usually translated as "value freedom" or "value neutrality."
Weber argued passionately that social science must strive to be free from values in its actual research conclusions. This doesn't mean scientists have no personal values — of course they do. But Weber insisted that when we're doing actual scientific work, our conclusions should be restricted to factual statements, excluding practical evaluations and policy recommendations that go beyond identifying effective means. The scientist should act like a mapmaker: they can tell you how to get somewhere, but they shouldn't tell you where you ought to go.
This principle was widely embraced by social scientists around the middle of the twentieth century, becoming a kind of gold standard for what made social research "scientific." Weber's ideal promised that political science could achieve objective knowledge even while studying messy human affairs.
But here's where things get fascinating and complicated. Weber's own principle contains what modern scholars call the "Weberian paradox": the call for science to be value-free is itself a normative stance. By saying science ought to be value-free, Weber was making a value judgment! This paradox becomes particularly important today, when scholars are increasingly expected not just to explain the world but to contribute positively to change.
Weber was also realistic about the limits of value freedom. He acknowledged that values affect the choice of research problems — what we decide to study in the first place. A scholar concerned with democracy will study different things than one obsessed with authoritarianism. But once the research begins, Weber believed we should minimize distortion from our value commitments.
Critics have pounced on these limitations. Some argue that value conclusions cannot be cleanly separated from factual analysis in political science. When you study "democratic breakdown," for example, your very definition of "democratic" contains value judgments. Others note that Weber's ideal was developed partly as a shield against accusations of socialism in social science — it had political purposes of its own.
Despite these critiques, Weber's framework remains enormously influential. It established that even if political science can't be perfectly value-free, the aspiration toward objectivity matters enormously. It also protected values from what Weber called scientism — the dangerous view that science can answer all value questions. Weber wanted to keep science and politics separated, so that we wouldn't disguise political arguments in scientific clothing.
The Behavioral Revolution: When Political Science Tried to Become Physics
The most dramatic attempt to make political science "truly scientific" came with the behavioral revolution of the 1950s and early 1960s. This movement, led by scholars like Robert Dahl, David Easton, Heinz Eulau, and Philip Converse, wanted to transform political science from a discipline based on history, philosophy, and institutional description into something that looked much more like natural science.
The behavioral revolution was deeply influenced by developments in psychology regarding human behavior. It focused on political behavior — the acts, attitudes, preferences, and expectations of individuals in political contexts. The core idea was beautifully simple: if we can observe and measure political behavior systematically, we can discover general patterns just like physicists discover laws of motion.
Behavioralists insisted on several key principles that they believed made their work genuinely scientific:
- Systematic observation rather than impressionistic description
- Quantifiable data that could be analyzed statistically
- Hypothesis testing where predictions could be confirmed or refuted
- Focus on "is" (what actually happens) rather than "ought" (what should happen)
- Generalization across cases rather than unique historical narratives
David Easton and others believed that political science could adopt the methodology of natural sciences, leading to an explosion of studies in areas like voting behavior where systematic, quantifiable data were readily available. The movement got additional momentum from the establishment of journals like Experimental Study of Politics and the growing prestige of statistical methods in academia.
The behavioral revolution redefined "science" within political science as positivist — requiring empirical methodologies akin to those in natural sciences. Clyde Barrow characterized this as a Kuhnian scientific revolution, a fundamental paradigm shift in how the discipline understood itself.
But critics were not silent. Sheldon Wolin and others argued that the behavioral revolution marginalized traditional political theory and emphasized a narrow focus on methodology, limiting the richness of political inquiry. They worried that by focusing only on observable behavior, political science was missing the deeper normative questions that make politics meaningful: What is justice? What makes government legitimate? What is the good life?
The phrase "behavioral revolution" itself didn't gain widespread traction until around 1968, suggesting that the movement's self-conscious identity emerged partly in response to these critiques. Contemporary historians still debate whether it was truly revolutionary or merely represented continuity with longer methodological trends.
Hans Morgenthau: The Passionate Critic of Political Scientism
One of the most powerful voices against making political science "too scientific" belonged to Hans Morgenthau (1904–1980), the German-born American theorist who helped establish international relations as a distinct academic discipline. Morgenthau's critique is particularly valuable because he understood both the appeal and the dangers of scientific approaches to politics.
Morgenthau's intellectual journey began in Europe, where he completed his Habilitation at the University of Geneva in 1934. Shortly after, he wrote a lengthy manuscript titled Über den Sinn der Wissenschaft in dieser Zeit und über die Bestimmung des Menschen (On the Purpose of Science in These Times and on Human Destiny). This underappreciated work provided the foundation for publications throughout his life in which he ferociously defended a normative role for science against the rise of behavioralism.
His most famous American work, Scientific Man vs. Power Politics (1946), remains one of the most impressive indictments of the "scientific" study of politics ever written. Morgenthau argued that scientism — the belief that social problems can be solved like natural problems using scientific methods — was "the most dangerous product" of nineteenth-century rationalism.
What made Morgenthau's critique so powerful? He identified several fundamental problems with treating politics as a natural science:
- The observer becomes part of the observed: Unlike atoms or chemicals, human beings react to being studied. The social scientist "stands in the streams of social causation as an acting and reacting agent." Observation itself can change what is being observed.
- Individuality defeats generalization: While natural scientists study "averages of large numbers of similar objects," social scientists must focus on individual behavior — and "the inevitable emphasis upon individuality extends the domain of uncertainty immeasurably."
- Too many variables: Morgenthau pointed out that social sciences deal with "interminable chains of causes and effects," where each link connects to countless others. The human mind simply cannot grasp all relevant variables.
- The "method of the single cause" fails: Morgenthau showed how between the World Wars, thinkers offered simplistic explanations for war — faulty borders, high tariffs, national isolation — each claiming a single scientific fix. History proved them all wrong.
Morgenthau's experience of Weimar Germany's collapse deeply shaped his skepticism. He had witnessed how rationalist approaches to politics — treating governance as an engineering problem — could fail catastrophically when they encountered human passions, power lust, and ideological extremism.
Yet Morgenthau's position contains fascinating tensions. In his later work Politics Among Nations, he stated that "political realism believes that politics, like society in general, is governed by objective laws that have their roots in human nature." This sounds positively scientific! Scholars have debated whether this makes Morgenthau a secret positivist.
The resolution lies in understanding Morgenthau's German intellectual heritage. The German term Wissenschaft (science) encompasses any systematic knowledge creation, including humanities — it's not confined to empirically verifiable knowledge like natural sciences. Morgenthau's "objective laws" were derived from classical philosophy and practical wisdom, not from mechanical, predictive laws. As Richard Ned Lebow clarified, their application is "always context-dependent" — they serve as a compass, not a map.
The Post-Behavioral Synthesis and Contemporary Debates
By the 1970s and 1980s, the fierce battles between behavioralists and their critics began to give way to more nuanced positions. Most political scientists today accept that their discipline is neither purely scientific like physics nor purely humanistic like poetry, but something in between — a social science with distinctive characteristics.
Contemporary political science features a pluralistic methodological landscape:
- Quantitative researchers use sophisticated statistics, experiments, and formal models to test hypotheses about political behavior
- Qualitative researchers employ case studies, historical comparison, and interpretive methods to understand political meaning
- Mixed-method approaches combine both traditions
- Normative theorists continue to ask "what ought to be" alongside "what is"
Recent years have seen what some call a "movement to recover history" in political science, producing approaches like analytic narratives (combining rational choice and historical narrative) and quantitative historical research (bringing scientific methods into history). These developments suggest that the old battles between "scientific" and "historical" approaches are giving way to more creative syntheses.
The cognitive revolution — drawing on the work of Kahneman and Tversky on human decision-making biases — has opened new opportunities for dialogue between behavioralists and constructivists, who study how social norms and ideas shape political choices. This suggests that political science's scientific aspirations continue to evolve rather than standing still.
What the Great Thinkers Teach Us About Political Science Today
So after this long journey through Machiavelli, Weber, the behavioralists, and Morgenthau, where do we stand? Here are the key insights that emerge:
- Machiavelli showed that systematic observation of real politics — combined with historical comparison — can generate practical knowledge, even if it falls short of natural science's precision
- Weber established that the aspiration toward value freedom matters, even if perfect neutrality remains impossible, and that we must protect both science and values from inappropriate imperialism
- The behavioralists demonstrated that political behavior can be measured and analyzed systematically, but their critics showed that this approach risks missing the deeper meaning and normative significance of politics
- Morgenthau reminded us that politics involves human beings in their full complexity, not reducible to simple variables, and that the attempt to make politics "scientific" can itself become dangerous ideology
The most honest answer to "Is political science a science?" is probably: "It's complicated, and that's okay." Political science is a disciplined inquiry that borrows scientific methods where appropriate while remaining open to historical, philosophical, and normative approaches where they add value. The word "science" in its name represents an aspiration — toward rigor, evidence, and systematic thinking — rather than a claim to have achieved the status of physics.
What matters most is not whether political science wins the label "science" but whether it produces genuine knowledge that helps us understand and improve political life. On that standard, the discipline has much to be proud of — and much room to grow.
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