AP Government Unit 5 Essentials

Six constitutional amendments progressively expanded the franchise: citizenship (14th), race (15th), direct Senate elections (17th), sex (19th), poll taxes (24th), and age (26th). Each represented the culmination of a political movement. But constitutional rights alone don't guarantee equal access to the ballot — states control voting logistics, and structural barriers like voter ID laws, registration requirements, and limited polling hours continue to produce unequal participation. The debate over these barriers is directly tested on the AP exam and connects directly to the civil rights legacy of the 15th and 24th Amendments.

The U.S. has maintained a two-party system for nearly 170 years not because voters prefer it, but because winner-take-all single-member districts structurally punish third parties — a party can win 15% of the national vote and get zero seats. Compared to proportional systems used in most democracies, this structure creates a duopoly. Third parties also face co-optation — when they raise popular ideas, major parties absorb them, gutting the third party's appeal. Understanding this structural argument (rather than just blaming voter behavior) is the sophisticated AP Gov answer.

Interest groups are a normal feature of pluralist democracy — Federalist No. 10 anticipated exactly this kind of faction. But inequality of resources means some interests are far better represented than others. Groups like AARP (millions of members, massive budget) dominate policy discussions in ways that smaller, less-funded groups cannot match. Iron triangles — stable three-way relationships between congressional committees, executive agencies, and interest groups — create policy subsystems that are hard to disrupt and can effectively exclude public input. This connects directly to Madison's concern in Federalist No. 10 about whether a republic can manage faction without suppressing liberty.

The trajectory of campaign finance law runs: early unlimited donations → BCRA (2002) banning soft money → Citizens United (2010) ruling that independent political spending = protected First Amendment speech → unlimited Super PAC spending. Citizens United is the required case for Unit 5 and appears regularly on the AP exam. The core tension is between free speech values (corporations have the same First Amendment rights as individuals when spending on political speech) and democratic equality values (unlimited corporate spending drowns out ordinary citizens). Understanding both sides of this argument — and being able to apply the First Amendment reasoning — is essential for FRQ 3.

The media connects citizens to government not just by reporting events, but by shaping which events matter (agenda setting) and how they're understood (framing). Traditional gatekeepers — major newspapers and broadcast networks — have given way to a fragmented media landscape where partisan news outlets, social media, and algorithmic feeds create ideological echo chambers. The AP exam distinguishes between agenda setting (deciding what to cover — structural) and media bias (how issues are framed — directional). Social media accelerates both information spread and misinformation. Understanding how changing media structures affect democratic deliberation and political knowledge is the key conceptual question for Topics 5.12–5.13.