Notes on Chapter 9: Political Parties
9.1 What Are Parties and How Did They Form?
What are political parties?
Parties are groups of people with similar interests who work together to create and implement policies by winning elections.
They nominate candidates, coordinate campaigns, mobilize voters, and develop party platforms that guide members of Congress in drafting legislation and voting on issues.
Parties aim to gain control of government and translate public preferences into policy through electoral success.
Parties vs interest groups
Interest groups: usually not officially affiliated with a party; influence policy indirectly.
Political parties: organizations that directly seek to win and hold public office to implement policy.
James Madison’s insight in Federalist No. 10: factions (self-interested groups) are inevitable; parties and interest groups are two prominent forms of factions in the U.S.
Parties as unique organizations
Parties identify and align sets of issues important to voters (party platforms).
They coordinate across local, state, and national levels to win elections and implement their policy preferences.
If successful, parties gain control of government and deliver policy preferences to voters and elites.
Origins and formation of parties in the United States
Early national politics were local and elite-driven with limited suffrage; national parties did not exist in our modern sense.
Two core factions emerged early: Federalists (favored a stronger centralized republic) and Anti-Federalists/Democratic-Republicans (favored more state autonomy).
Washington warned against parties in his Farewell Address, yet factions formed coalitions to nominate and elect leaders.
By 1796, Federalists (led by Hamilton) and Democratic-Republicans (led by Jefferson) were major electoral coalitions.
The Electoral College design initially discouraged parties, but the system evolved; the Twelfth Amendment (ratified 1804) established separate elections for President and Vice President to avoid ties and reduce outsider risk.
In the 1796–1800 period, political coalitions evolved into more organized parties rather than loose elites.
The 1800 election (the so-called “Revolution of 1800”) highlighted the risk of party coalitions in the executive branch and contributed to the Twelfth Amendment.
Early party system and the rise of party organization
The Democratic-Republican Party split from the Federalists after the early period, setting the stage for a two-party system.
The 1824 election: Andrew Jackson won the most popular votes and electoral votes but not a majority; the House decided (the “Corrupt Bargain” debate surrounding Adams victory and Clay’s support).
The 1828 election: a dramatic expansion of suffrage to more White men, enabling Jackson’s victory; this marked a shift toward modern party organization and mass participation.
The Democratic Party emerged as the party of the “common man,” leveraging the expansion of suffrage and party organization to mobilize voters; the Whig/National Republican alignment later formed as a counterweight.
The era saw the growth of political machines and spoils systems, where party bosses rewarded supporters with government jobs and built broad coalitions.
Third parties and challenges to the two-party system
Throughout U.S. history, third parties (minor parties) emerged to challenge the two-party system, often focusing on specific issues.
Populist Party (1892) advocated for railroad regulation, income tax, and direct election of U.S. senators; it influenced later reforms.
Progressive Party (1912) and its platform called for women’s suffrage, an eight-hour workday, workers’ compensation, direct election of U.S. senators, and an income tax.
Dixiecrats (States’ Rights Democrats, 1948) opposed federal civil rights efforts; they challenged party unity but largely dissolved after their impact.
Over time, third parties typically drew votes away from major parties, sometimes determining outcomes but rarely achieving long-term national control.
While third parties rarely win national offices, they can push major parties to adopt issues from their platforms.
The two major parties today and the concept of realignments
The Democratic and Republican parties have dominated since the Civil War, though their coalitions and regional bases have shifted over time.
Realignments occur when broad segments of the electorate shift their party loyalties, often in response to socioeconomic changes and major policy outcomes.
Summary of 9.1 (key takeaways)
Political parties are organized groups seeking to win elections and influence government.
They differ from interest groups in that they aim to control government through winning office.
The U.S. party system evolved from elite, localized competition to a enduring two-party structure, punctuated by occasional third-party movements.
Major constitutional and institutional changes (e.g., the Twelfth Amendment) shaped how parties contest elections and form coalitions.
9.2 The Two-Party System
Why two parties? The structural reasons
The United States uses a winner-take-all, single-member-district system for most elections, which tends to produce two dominant parties.
In plurality (first-past-the-post) elections, the candidate with the most votes wins, even without a majority; this discourages vote-splitting and supports two-party outcomes.
The two-party system is reinforced by political alliances, regional coalitions, and ballot-access rules that advantage established parties.
Plurality vs proportional representation
Plurality (first-past-the-post): the winner gets the most votes, not necessarily a majority; often leaves smaller parties with no representation.
Proportional representation (PR): seats are allocated according to the share of votes each party receives; smaller parties can win seats even without broad nationwide support.
Consequences:
In PR, minor parties can gain representation and influence policy.
In plurality systems like the U.S., third parties struggle to win seats but can act as spoilers by drawing votes from major parties (e.g., 2000 Nader and Gore in Florida).
The “spoiler effect” and consequences for major parties
Third parties often emerge to advocate niche issues but rarely achieve broad coalitions.
When a third party draws votes from a majority party’s candidate, it can tilt outcomes in favor of the other major party.
Example: Ralph Nader’s Green Party candidacy in 2000 is cited as potentially drawing votes from Gore in key states like Florida, influencing the outcome.
Structural and historical factors sustaining two parties
The Electoral College and winner-take-all rules reinforce two-party outcomes in presidential elections.
Regional and demographic sorting has reshaped party coalitions over time (e.g., the “Solid South” shifting from Democratic to Republican alignment over decades).
State election laws and ballot access practices create additional barriers for third-party campaigns.
The two-party system is linked to long-run historical development and the fact that no third party has won the presidency in the modern era.
Critical elections and realignments (Table 9.1 overview)
1796–1824: First Party System – Federalists vs. Democratic-Republicans.
1828–1856: Second Party System – Democrats vs. Whigs; expansion of suffrage.
1860–1892: Third Party System – Republicans dominate; civil war and aftermath.
1896–1932: Fourth Party System – Republicans dominate; gradual reform; Populist/Progressive challenges.
1932–1964: Fifth Party System – Democrats dominate; New Deal coalition; civil rights realignment.
1964–present: Sixth Party System – ongoing realignment; Republicans gain support in the South; Latinos and Asians increasingly vote Democratic; polarization increases.
The two-party system in practice: elections and governance
Presidential and congressional elections often reflect more centrist, “middle” voting, while parties mobilize their bases.
Party organization spans national, state, and local levels; the system rewards durable coalitions and broad-based accountability.
Electoral rules and the U.S. two-party system (additional factors)
Electorate characteristics, such as ethnicity and regional distribution, historically influenced party success.
Ballot access laws and petition requirements can block or hinder third-party entrants.
The interplay of the Electoral College, regional realignments, and ballot rules contributes to the persistence of two major parties.
The role of third parties in a two-party system
Third parties can influence policy agendas by introducing issues that major parties later adopt.
Despite their limited success, third parties have historically contributed to political change.
Summary of 9.2 (key takeaways)
The U.S. largely operates a two-party system due to single-member districts, plurality voting, and electoral rules.
Plurality systems tend to marginalize third parties and encourage two-party competition; PR systems would increase multiparty representation.
Realignments and the Electoral College shape party coalitions and national outcomes.
Third parties, while often unsuccessful in winning major offices, can shift policy debates and party platforms.
9.3 The Shape of Modern Political Parties
The three components of modern parties (Key’s framework)
The party in the electorate: voters who identify with or lean toward a party; party identifiers and leaning independents.
The party organization: the formal structure coordinating party activities, fundraising, candidate selection, and campaigning.
The party in government: officeholders who implement the party’s agenda and maintain party discipline.
The party in the electorate
Voters’ party identification shapes behavior, including voting regularity and issue positions.
Party identifiers are the core base of the party; they may contribute financially and organize at election time.
Gallup and other polls show that a majority of Americans identify with or lean toward a major party, with generation-related differences in identification.
Generational trends:
Millennials and Gen Z show stronger lean toward the Democratic Party or independence with lean toward one of the major parties.
Party identification is not always formal membership; many voters declare party IDs or lean toward parties without formal enrollment.
The party organization
Local organizations (precincts and counties) are the “workhorse” of elections: identifying voters, fundraising, candidate recruitment, volunteer coordination, and polling integrity.
State organizations coordinate statewide candidate recruitment, campaigning for statewide offices, and the party platform; they also run caucuses and state conventions.
National organizations coordinate nationwide fundraising, candidate strategy, and convention operations; they also set national platforms.
The party organization also maintains the party brand and unity across contested nomination battles and general elections.
Local and state party structures
County organizations: mobilize voters, recruit volunteers, and manage local election logistics.
State organizations: recruit statewide candidates, conduct caucuses/primaries, draft state platforms, and hold state conventions that select delegates to the national convention.
Caucuses vs primaries: caucuses are meetings where voters express preferences, often at the precinct level; primaries are statewide ballots used to select nominees.
National conventions: media events culminating in the formal nomination of presidential and vice-presidential candidates; platforms adopted; can function as a showcase for rising leaders and a strategic moment for fundraising and messaging.
The party in government
Party conferences (Republicans) or party caucuses (Democrats): closed sessions to set legislative agendas and assign committee roles.
Party leaders and whips organize voting, scheduling, and discipline; majority/minority leaders and whips coordinate strategy in each chamber; the Speaker (in the House) is a major power figure.
Independent politicians who caucus with a party (e.g., Bernie Sanders with Democrats) still influence party strategy and can participate in leadership dynamics.
The party-in-government faces the challenge of unity across diverse district interests, especially in a federal system with separation of powers and divided government.
Examples of intra-party dynamics: the Speakership episodes (e.g., McCarthy and Johnson issues) and the influence of party leadership on voting and policy.
National conventions and media dynamics
National conventions are key spectacles that shape public perception and unify the party’s message.
They are used to elevate rising stars, define the party platform, and showcase organizational strength, even as media coverage has declined since the 1960s.
The conventions still serve as an important coordination and fundraising platform for the party.
Barack Obama and convention momentum case studies
Barack Obama’s rise to national prominence is linked to keynote speeches and convention moments (e.g., 2004 DNC keynote; 2008 presidential nomination).
These moments illustrate how conventions can launch political careers and set the tone for national campaigns.
Summary of 9.3 (key takeaways)
Modern parties are three-part systems: the electorate, the organization, and the government.
Party identification shapes voting behavior, while the organization coordinates campaigning and fundraising.
Local and state levels are the backbone of electoral organization; national conventions and the party-in-government shape national strategy and policy.
9.4 Divided Government and Partisan Polarization
Divided vs unified government
Divided government: when the presidency and at least one chamber of Congress are controlled by different parties (or when one or more chambers are controlled by a party opposite the executive).
Unified government: when the same party controls the presidency and both chambers of Congress.
Divided government can hinder legislative productivity and policy passing, creating tensions between campaign promises and governing realities.
Historical patterns show alternating periods of divided government, though unified government has also occurred.
The consequences of divided government
Government shutdowns have occurred when budgets fail to pass (e.g., 1976 Ford era example; 1980s Reagan-era shutdowns; 2018–2019 shutdowns).
Divided government can impede swift policymaking and increase political theater and public dissatisfaction.
The problem of polarization
Polarization: the widening ideological distance between the two major parties, leading to fewer moderates and more pro-party voting.
Polarization reduces cross-party collaboration and makes bipartisan compromise harder to achieve.
Explanations for polarization (the main theories)
Sorting thesis (party-in-government): long-term alignment of voters with national party positions as opposed to local concerns.
Race and demographic shifts contributed to a shift in coalitions (e.g., Southern Democrats realigning with Republicans, African Americans and urban voters aligning with Democrats).
The evangelical movement in politics helped move the South toward the Republican Party while northern moderates and social reformers drifted toward Democrats.
Technological and media nationalization: the spread of national news, television, cable, and the Internet has centralized political messaging, making national polarization more salient.
Gerrymandering: district manipulation to protect incumbents and create safe seats can incentivize more extreme legislative positions and reduce incentive for cross-party collaboration.
Redistricting dynamics: Reynolds v. Simms (1964) established one-person-one-vote equality, leading to more aggressive districting to create safe seats.
The relative strength of the media environment: modern media ecosystems elevate outspoken partisans and can harden polarization.
Economic and social changes: evolving views on race, gender, immigration, and globalization contribute to shifting party coalitions.
Evidence and societal impacts
Polarization correlates with lower legislative productivity, lower public trust in Congress, and more frequent government shutdowns.
Public approval trends show lower congressional approval ratings, even when presidential approval remains higher.
The rise of issue-driven movements (e.g., Tea Party on the right; Occupy Wall Street and Black Lives Matter on the left) illustrates how activism and ideological movements shape party dynamics.
The Occupy movement and BLM protests influenced policy debates, electoral alignments, and the degree of partisanship in responses to social issues.
The costs and benefits of polarization
Benefits: clearer voter choices, distinct party platforms, and a competitive political environment.
Costs: reduced bipartisanship, more extreme party behavior, and challenges to effective governance.
The political landscape today and realignment dynamics
The six-party-system framework highlights ongoing shifts in coalitions (e.g., urban areas and the Northeast leaning Democratic; the South and rural areas leaning Republican).
Ongoing changes in demographic composition (Latino and Asian voters leaning Democratic; religious and cultural realignments) contribute to shifting coalitions.
The rise of identity politics and social issues continues to reshape party identities and policy priorities.
Finding a middle ground (study prompts)
Should there be reforms to reduce polarization, such as independent redistricting commissions, ranked-choice voting, or more open primaries?
How might changes to the electoral system affect party competition and governance?
Can party leaders balance loyalty to the party with the demands and needs of diverse constituencies within their base?
Notable numerical/causal references (for quick recall)
Presidential nominating conventions: held by both parties in 2024 after COVID-19 disruptions in 2020; conventions serve to nominate and launch campaigns.
The two-party system has persisted despite numerous third-party movements since the Civil War, due in part to structural rules and historical realignments.
The six party-system model outlines distinct periods of party dominance and realignment from 1796 to the present.
The emergence of party polarization and its consequences on governance over the last few decades, including reduced legislative output and rising public discontent.
Key Terms (glossary-style definitions)
bipartisanship: a process of cooperation through compromise across party lines.
critical election: an election that represents a sudden, clear, and long-term shift in voter allegiances.
divided government: a condition in which one or more houses of the legislature is controlled by the party in opposition to the executive.
first-past-the-post: another term for plurality voting; the winner is the candidate with the most votes.
gerrymandering: the manipulation of legislative districts to favor a particular candidate or party.
majoritarian voting: a system where the winner must receive at least 50% of the votes, often requiring a runoff if no candidate reaches that threshold.
majority party: the legislative party with over half the seats.
minority party: the legislative party with fewer than half the seats.
moderate: an individual positioned between the ideological extremes.
party identifiers: individuals who publicly identify with a political party.
party organization: the formal structure of a political party and its active members coordinating campaign activities and policy.
party platform: the collection of a party’s positions on issues it deems important.
party polarization: the shift of party positions from moderates toward ideological extremes.
party realignment: a shifting of party alliances within the electorate.
party-in-government: party identifiers who have been elected or appointed to office and are responsible for delivering on the party’s promises.
party-in-the-electorate: members of the voting public who identify with or consistently prefer one party and participate in elections.
personal politics: a political style focusing on building direct relationships with voters rather than promoting specific issues.
plurality voting: same as first-past-the-post; the candidate with the most votes wins.
political machine: an organization that secures votes for a party’s candidates, often in exchange for jobs and favors.
precinct: the lowest level of party organization, typically organized around neighborhoods.
proportional representation: an electoral system where seats are allocated according to the share of votes each party receives.
reapportionment: the redistribution of House seats among the states based on population changes.
redistricting: the redrawing of electoral maps to reflect population shifts.
safe seat: a district where a party can be confident of winning by a comfortable margin.
sorting: the process by which voters align with national party positions and thus identify more with a party over time.
third parties: minor parties that challenge the two major parties; they often focus on narrow issues and have limited long-term success but can influence policy.
two-party system: a political system in which two major parties win most of the elections.
Summary of 9.1 (concise recap)
Political parties are essential to democracy, arising from the need to solve collective action problems and aggregate public preferences into public policy.
Early U.S. politics were dominated by elite coalitions; the modern two-party system emerged and stabilized by the Civil War era.
Third parties have periodically challenged the system and introduced important issues, often influencing major-party platforms.
Structural features like the Electoral College and electoral rules have reinforced two-party dominance and shaped coalition-building across the country.
Realignments over time reflect shifts in regional, demographic, and social bases, contributing to the current political landscape.
Summary of 9.2 (quick reference)
The two-party system is reinforced by winner-take-all elections and plurality voting; third parties struggle to win seats but can influence outcomes.
Plurality vs proportional representation: PR would enable more parties, whereas plurality tends to consolidate power among two major parties.
Critical elections and realignments explain how party coalitions shift over time (e.g., 1932 FDR realignment).
The Electoral College and ballot-access laws contribute to the durability of two major parties.
Summary of 9.3 (quick reference)
Modern parties comprise three elements: the electorate, the organization, and the government.
The party-in-the-electorate provides the base and defines loyalists; the party organization coordinates campaign mechanics and branding; the party in government handles policy implementation and leadership in Congress.
Local and state organizations are the backbone of day-to-day politics, while the national organization handles conventions, platform, and national fundraising.
Caucuses, primaries, and conventions are crucial mechanisms for candidate selection and party unity.
The party-in-government creates leadership structures (Speaker, majority/minority leaders, whips) and enforces voting discipline to advance the party’s agenda.
Summary of 9.4 (quick reference)
Divided government creates potential for gridlock and heightened partisan tension; unified government can enable smoother policy passage but may reduce accountability.
Polarization has increased due to sorting, media nationalization, and strategic districting (gerrymandering).
Gerrymandering and redistricting strategies have contributed to the rise of safe seats, pushing candidates toward the extremes.
Movements on both left and right (e.g., Occupy, Tea Party, BLM) have influenced party dynamics and policy debates.
The overall effect of polarization on governance includes decreased legislative productivity, lower public trust in Congress, and more frequent government shutdowns, while simultaneously sharpening voter choices and party identities.
Connections to foundational principles and real-world relevance
Democratic governance relies on clear policy choices and competitive elections; polarization can threaten functional governance by eroding bipartisan cooperation.
The realignment literature illuminates how shifts in social, economic, and demographic factors reshape party coalitions and policy outcomes.
Understanding party structure helps explain contemporary debates over election reforms (ranked-choice voting, independent redistricting commissions, and ballot access).
Ethical, philosophical, and practical implications
The balance between ensuring party loyalty and representing diverse constituencies raises questions about representation, accountability, and the design of democratic institutions.
The tension between majority rule and protection of minority views is evident in the two-party system, polarizing effects, and the role of third parties.
The governance implications of divided government highlight the ethics of compromise versus principled stand-taking in policymaking.
Notable numerical references and equations (LaTeX)
Twelfth Amendment effective year:
1820s–1830s: major shifts in party coalitions and suffrage expansion; 1828 turnout relative to 1824:
1860 presidential election: Lincoln won with of the popular vote and secured the electoral college majority; he won the presidency with the most electoral votes though not a majority of the popular vote due to multiple candidates.
2000 presidential election narrative: Ralph Nader attracted votes that could have gone to Gore; discussion of the spoiler effect.
Campaign finance: average House campaign cost in 2020 was ; Senate campaigns around .
Legislative productivity indicators: 106th Congress (1999–2000) passed substantive pieces; 107th (2000–2001) passed ; 2013–2014 totaled .
Third-party impact: 8% of seats in 1996 national parliament would have gone to Reform Party under proportional representation (hypothetical).
Party identification stability: historically, over half of American adults identify as Republican or Democrat; independents often lean toward one major party (e.g., 2015–2016 data).
Important figures and examples to remember
Figure 9.2: The Progressive Party platform (1912) highlighted: campaign disclosures, eight-hour workday, federal income tax, and women’s suffrage.
Figure 9.3: Thomas Jefferson’s near-tie in 1800 highlighted the need for Constitutional safeguards (12th Amendment).
Figure 9.4: Various third parties through history (Populists, Progressives, Dixiecrats, Greens, Libertarians) and their influence on major parties.
Figure 9.6: Proportional representation ballots versus plurality ballots illustrating how PR would change ballot design and representation.
Figure 9.12: Barack Obama’s 2004 DNC keynote and 2008 nomination—illustrating how convention speeches can catalyze national profiles.
Figure 9.14: Polarization trends showing the rise of ideological distance between parties since the 1970s.
Figure 9.18: Gerrymandered districts and their political consequences; Reynolds v. Simms (1964) establishes the one-person-one-vote principle.
Figure 9.19: Texas gerrymandering examples demonstrating district manipulation to reduce Democratic seats.
Table and critical concepts (reference-style)
Table 9.1: Six periods of party systems and realignments (First through Sixth Party System).
Key terms: bipartisanship, critical election, divided government, first-past-the-post, gerrymandering, majoritarian voting, majority party, minority party, party identifiers, party organization, party platform, party polarization, party realignment, party-in-government, party-in-the-electorate, proportional representation, reapportionment, redistricting, safe seat, sorting, third parties, two-party system.
// End of notes for Chapter 9: Political Parties