AP Gov units: All 5 units, exam weightings, and where to focus

AP US Government and Politics is organized into 5 CED units, and CollegeBoard weights them differently on the exam. Some units are worth roughly double what others are, so revision planned without checking the weightings tends to spread time evenly across all 5 and under-serve the biggest topics.

This guide gives you the weighting for every unit, what's inside each, and where to spend your time first. If you want structured content coverage, Cognito's AP US Government course walks through each CED unit with lessons and practice questions.

Unit 1 covers the founding documents (Declaration of Independence, Articles of Confederation, Constitution), the debates over ratification (Federalists vs Anti-Federalists), the compromises that produced the Constitution, and federalism. It's a mid-heavy unit and it's foundational for every other unit.

What to prioritize: The 9 required foundational documents in the CED (Federalist 10, Federalist 51, Brutus 1, the Declaration, the Constitution, etc.), the compromises of the Constitutional Convention, and the mechanics of federalism (enumerated, reserved, concurrent powers, plus grants-in-aid).

Unit 2 is the heaviest unit on the exam by weighting. It covers Congress (structure, powers, processes), the presidency (formal and informal powers, checks on presidential power), the Supreme Court and lower federal courts, and the bureaucracy. Interactions between the branches (checks and balances in practice) are the through-line.

What to prioritize: How a bill becomes law, congressional oversight tools, informal presidential powers (executive orders, signing statements), judicial review and how it developed from Marbury v. Madison, and the three required Supreme Court cases in this unit (Marbury v. Madison, Baker v. Carr and Shaw v. Reno).

Unit 3 covers the Bill of Rights, selective incorporation, and civil rights movements. It's where most of the required Supreme Court cases live: Engel v. Vitale, Wisconsin v. Yoder, Tinker v. Des Moines, Schenck v. US, NYT v. US, Gideon v. Wainwright, Roe v. Wade, McDonald v. Chicago and Brown v. Board of Education.

What to prioritize: The 9 required Supreme Court cases in this unit (facts, constitutional principle, majority reasoning, and the case's broader significance), the mechanics of selective incorporation via the 14th Amendment, and specific tests the Court uses (strict scrutiny, clear and present danger, Lemon test).

Unit 4 covers political socialization, political ideologies (liberal, conservative, libertarian), public opinion polling, and how ideology shapes policy preferences. It's the smallest unit and the least concept-heavy, but it's tested in specific ways on the Argumentation FRQ and the Quantitative Analysis FRQ.

What to prioritize: The factors driving political socialization, how public opinion polls are constructed (sampling, margin of error, question wording effects), and the connection between ideology and specific policy positions.

Unit 5 is the second-heaviest unit. It covers voting rights and voter turnout, elections (primaries, caucuses, general elections, electoral college), political parties, interest groups, media, and campaign finance.

What to prioritize: The 15th, 19th, 24th and 26th Amendments and their effects on voter turnout, the mechanics of the electoral college, the shift from broadcast to fragmented media, and campaign finance rules from Buckley v. Valeo through Citizens United (the required case for this unit; Baker v. Carr and Shaw v. Reno sit in Unit 2 but are tested on redistricting here too).

If you're building a 10-week revision plan, a defensible weighting is roughly 4 weeks split across Units 2 and 5 (they're 45-63% of the exam), 2 weeks each on Units 1 and 3, and 1 week on Unit 4. The remaining 1-2 weeks should be full timed FRQs and MCQ mocks, not more content review.

AP Gov also has 15 required Supreme Court cases and 9 required foundational documents you're expected to be able to cite with specific details. Building index-card summaries for each (facts, constitutional principle, holding, and one line on significance) is one of the highest-return revision tasks you can do in the last month.