# American Politics Hub American politics is the subfield of political science that studies the institutions, processes, and behavior of the United States government. It asks how the constitutional design channels power, how parties and elections determine who wields it, how Congress and the presidency contest its use, and how interest groups and money shape its direction. In most political science departments it is the largest subfield — and in this vault it is the most thoroughly built territory, because the American system is where the right-wing ecosystem this KB documents does its work. This hub introduces the subfield's core topics and routes into the deep existing infrastructure across the Foundations, Policy, and Concepts shelves. It is a learning-oriented front door rather than a redundant index: the detailed pages live in the sub-hubs linked below, and this hub explains how they fit together as a coherent field of study. ## Constitutional structure and federalism The American system begins with a constitutional design that distributes power by both function and geography. The functional division — [[Separation of Powers]] among legislature, executive, and judiciary, reinforced by [[Checks and Balances]] — was an 18th-century innovation drawn from [[Montesquieu]]'s theory that liberty requires that no single body hold all governmental authority. The framers' insight was that ambition must be made to counteract ambition: each branch was given the tools to resist encroachment by the others, creating a system that is deliberately inefficient by design. The tension between efficiency and liberty is permanent and unresolvable — it is a feature, not a bug, though every generation rediscovers the frustrations it produces. The geographic division — [[Federalism]], the vertical split between national and state governments — creates a second axis of fragmentation. The result is a system of overlapping jurisdictions, concurrent powers, and ongoing negotiation between levels of government that makes American governance unusually decentralized by world standards. [[Popular Sovereignty]], [[Consent of the Governed]], [[Natural Rights]], and [[Social Contract Theory]] provide the philosophical foundations. The [[Constitution]] and [[Bill of Rights]] codify them. The [[Power of the Purse]] gives Congress its most potent institutional lever. These are not abstract principles. They are the structural features that every political actor in this KB must navigate, and the ones that the modern right has most aggressively sought to reshape. The [[Unitary Executive Theory]] is a constitutional argument for concentrating executive power in the president's hands, overriding the administrative independence that [[Separation of Powers]] was designed to protect. [[Originalism]] is a theory of constitutional interpretation that claims to recover the founders' intent but in practice has served as the [[Federalist Society]]'s intellectual framework for reshaping the [[Judiciary Hub]]. The [[Independent State Legislature Theory]] sought to remove state courts from election oversight entirely — a move with no serious precedent in American constitutional history. The founding documents and the principles they encode are navigated by the [[Foundations Concepts]] hub. The [[Federal Government Hub]] maps the three branches at the institutional level. ## Parties and the party system American politics is organized through a two-party system whose stability is partly structural — [[Maurice Duverger]]'s law predicts that single-member-district, plurality-rule elections tend to produce exactly two major parties — and partly historical. The current party alignment is what political scientists call the [[Seventh Party System]], and it is the product of six prior realignments, each triggered by a crisis that reshuffled which coalitions belonged to which party. The full spine from [[First Party System]] through [[Seventh Party System]], with [[Realignment]] and [[Party Realignment]] as the transition engine, is indexed by the [[Parties Hub]]. The [[Republican Party]] is the primary subject of this KB, and its trajectory from the party of Lincoln through Eisenhower's moderate conservatism to the [[Tea Party Movement]], Trump, and [[National Conservatism]] is one of the most dramatic party transformations in American history. The [[Conservative Movement]] — the deliberate, decades-long project to move the party and the country rightward — is a case study in what political scientists call ideological entrepreneurship: a coalition of intellectuals, donors, and movement organizations that rewired a major party from the inside. The historical [[Democratic-Republican Party]] and [[National Republican Party]] provide deep-time context for how American parties have always been coalitional vehicles that can be captured and redirected. Understanding American parties also means understanding [[Partisan Sorting]] — the process by which party, ideology, religion, race, and geography have aligned into two increasingly homogeneous camps — and the [[Polarization]] that sorting enables. A generation ago, there were liberal Republicans and conservative Democrats, churchgoers in both parties and secularists in both parties. That cross-cutting complexity dampened conflict. Sorting eliminated it, turning party into a comprehensive identity rather than a political preference. The behavioral dynamics are covered in the [[Political Behavior Hub]]. ## Elections and campaigns Elections are the mechanism by which popular preferences become governing authority — and the arena where the gap between democratic theory and democratic practice is most visible. The [[Electoral College]] mediates presidential selection in ways that can and do diverge from the popular vote. The [[National Popular Vote Interstate Compact]] is an ongoing effort to effectively bypass it without a constitutional amendment. The [[Median Voter Theorem]] predicts that two-candidate competition converges on the center — and the American departure from that prediction is itself a research puzzle. Campaign finance is a political-science subfield in its own right. The [[Campaign Finance Hub]] tracks the legal architecture from the Tillman Act through [[Citizens United v. FEC]], which opened the floodgates of independent expenditure, to the [[Dark Money]] networks that now operate with minimal disclosure. The analytical framework connects directly to the interest-group and donor-network material elsewhere in the vault: the [[Koch Network]], [[ALEC]], and the think-tank infrastructure are all, in political-science terms, actors in the campaign-finance and lobbying ecosystem. The sheer scale of money in American politics — billions of dollars per election cycle, much of it untraceable — makes the US system unusual in comparative perspective and raises empirical questions about whether policy outcomes respond to voter preferences or donor preferences. [[Gerrymandering]] and [[Voter Suppression]] are the mechanisms by which the translation of votes into seats can be distorted. Both are active research areas in American politics, and both are extensively documented in this vault because they are tools the contemporary right has deployed systematically to insulate its power from majoritarian correction. The political science of electoral manipulation is not abstract — it is the discipline's contribution to understanding why the composition of legislatures so often diverges from the expressed preferences of the electorate. ## Congress and the presidency The two elected branches are where legislative and executive power collide. The [[Congress Hub]] navigates the legislature — its committee structure, its procedural rules (including the [[Filibuster]], which gives the Senate's minority a veto), and its support agencies. The relationship between Congress and the president is the central institutional drama of American government: the constitutional design creates what political scientists call "separated institutions sharing powers," which guarantees conflict. The presidency has expanded steadily from its Article II baseline. The modern debate over executive power is one of the most consequential in American politics, and it has intensified with each successive administration that pushes the boundaries of what the president can do unilaterally. The [[Administrative State]] — the network of federal agencies that implement law through regulation — is the battleground. The right's critique, operationalized through [[Project 2025]] and [[Schedule F]], argues that administrative agencies represent an unconstitutional fourth branch that must be brought under direct presidential control. The erosion of [[Chevron deference]] furthers this project by stripping agencies of interpretive authority, shifting power from expert bureaucrats to generalist judges. The counter-argument, grounded in the political science of delegation, is that Congress deliberately created agencies because legislatures lack the expertise and bandwidth to regulate a complex modern economy. The agencies are not a usurpation — they are a delegation, authorized by statute and overseen (imperfectly) by congressional committees and judicial review. [[Regulatory Capture]] and the [[Iron Triangle]] model describe what happens when that delegated authority is colonized by the industries it was meant to oversee. The cure — dismantling agencies — may be worse than the disease if it leaves complex problems unregulated rather than merely poorly regulated. The [[Elected Officials Hub]] maps the individual officeholders — presidents, members of Congress, governors — who populate these institutions. The [[Judiciary Hub]] covers the federal courts, from the [[Supreme Court of the United States]] down through the appellate and district courts. ## Interest groups, lobbying, and the donor class American politics has always been shaped by organized interests, but the scale and sophistication of the modern lobbying and donor infrastructure is qualitatively different from anything the founders anticipated. The [[Lobbying Hub]] covers the K Street layer that connects private money to public power. The think-tank network — [[Heritage Foundation]], [[American Enterprise Institute]], [[Cato Institute]], [[Federalist Society]] — translates donor preferences into policy briefs, model legislation, and judicial nominations. [[ALEC]] does the same at the state level, drafting bills that appear in statehouses across the country with only the state name changed. The [[Koch Network]] is the paradigm case: a donor-funded operation that spans think tanks, academic programs, grassroots organizations, and campaign-finance vehicles, all coordinated toward a coherent ideological agenda. The [[Powell Memo]] is the blueprint document that catalyzed this infrastructure's construction. [[Dark Money]] — political spending routed through nonprofit organizations that do not disclose their donors — is the financial architecture that makes much of it invisible to voters. Political scientists study this ecosystem through the lens of interest-group theory, pluralism and its critics, and the empirical question of whether policy outcomes track public preferences or donor preferences. The answer, as the Gilens and Page study demonstrated, is that economic elites and organized groups have substantial impact on policy while average citizens have little or none — a finding that the [[Power Theory]] page situates within the broader literature on oligarchy and elite theory. ## The conservative movement as a case study For students of American politics, the modern [[Conservative Movement]] is one of the most instructive case studies in the discipline. It demonstrates how a determined ideological coalition can reshape a party, a judiciary, a media ecosystem, and eventually a government through coordinated long-term investment in ideas, institutions, and personnel. The arc runs from the postwar intellectual foundations ([[Friedrich Hayek]]'s [[The Road to Serfdom]], the [[Mont Pelerin Society]]) through the organizational buildout of the 1970s ([[Powell Memo]], Heritage, Cato, the Federalist Society's founding) through the Reagan realignment and the Gingrich revolution to the [[Tea Party Movement]] and the Trump-era fusion of [[Right-Wing Populism]] with [[Christian Nationalism]] and [[Economic Nationalism]]. At each stage, the movement used recognizable political-science mechanisms: ideological entrepreneurship, coalition-building, institutional capture, media-environment construction, and the strategic exploitation of constitutional veto points. The [[Overton Window]] — the range of ideas considered politically acceptable — was deliberately shifted through decades of foundation-funded intellectual infrastructure, so that positions once considered extreme became the center of Republican orthodoxy. [[Free Market Fundamentalism]] moved from fringe to mainstream. [[Originalism]] moved from a minority judicial philosophy to the controlling theory on the [[Supreme Court of the United States]]. [[Christian Nationalism]] moved from a marginalized position to an open component of the Republican coalition. Political scientists study this process under the heading of "ideational power" — the ability to shape what people consider normal, natural, and inevitable. It is slower and less visible than legislative victories or electoral wins, but it is arguably more consequential, because it determines the terrain on which all subsequent battles are fought. This is the material this KB is built to document. The American Politics subfield provides the institutional map; the other subfields — [[Comparative Politics Hub]] for the backsliding framework, [[Political Behavior Hub]] for the mass-public dynamics, [[International Relations Hub]] for the foreign-policy dimension — provide the additional lenses needed to see the full picture. ## See also [[Political Science Hub]] | [[Political Philosophy Hub]] | [[Power Theory]] [[Federal Government Hub]] | [[Congress Hub]] | [[Judiciary Hub]] | [[Elected Officials Hub]] [[Parties Hub]] | [[Campaign Finance Hub]] | [[Lobbying Hub]] [[Political Behavior Hub]] | [[Comparative Politics Hub]] [[Authoritarianism Hub]] | [[Sociology Hub]] | [[Media Theory Hub]]