A legislature is the governing institution with the power to make laws, usually made up of representatives who debate and vote on legislation. In AP Comparative Government, the real question is how much independence each legislature has, from the UK's powerful Parliament to China's rubber-stamp National People's Congress.
A legislature is the branch of government that makes laws. Most are filled with elected representatives who propose bills, debate them, and vote. That's the textbook part. The AP Comp Gov part is comparison. Every one of the six course countries has a legislature on paper, but they range from genuinely powerful (the UK's House of Commons can fire the prime minister) to largely ceremonial (China's National People's Congress mostly approves decisions the Communist Party already made).
How a legislature relates to the executive defines the whole system of government. In a parliamentary system like the UK, the legislature and executive are fused. Parliament selects the head of government and can remove them with a vote of no confidence. In a presidential system like Mexico or Nigeria, the legislature is elected separately from the president, serves fixed terms, and can only remove executives through impeachment. The CED also flags how legislatures get constrained from outside, like China's Politburo Standing Committee acting as the real center of power, or Iran's Expediency Council resolving disputes between the Majles and the Guardian Council.
Legislatures sit at the heart of Unit 2 (Political Institutions) and show up in four topics. Topic 2.1 and 2.2 use the legislature-executive relationship to define parliamentary, presidential, and semi-presidential systems (AP Comp Gov 2.1.A and 2.2.A). Topic 2.5 covers how legislatures remove executives through no-confidence votes or impeachment (AP Comp Gov 2.5.A). Topic 2.7 asks the big comparative question, which is whether a legislature can actually act independently or whether other institutions constrain it (AP Comp Gov 2.7.A). If you can explain why the House of Commons matters more than the NPC, you've basically mastered the Unit 2 skill the exam rewards, which is comparing institutional power across regimes rather than just naming institutions.
Keep studying AP Comparative Government Unit 2
Parliamentary System (Unit 2)
In a parliamentary system the legislature is the boss. It picks the prime minister, can censure cabinet ministers, and can toss the government out with a no-confidence vote. The legislature and executive are fused, not separated.
Bicameral Legislature (Unit 2)
Structure matters for power. The UK, Mexico, Nigeria, and Russia split lawmaking between two chambers, while China's NPC and Iran's Majles are unicameral. A second chamber can be a real check (Nigeria's Senate) or mostly symbolic (the UK's House of Lords).
Cabinet (Unit 2)
Who controls the cabinet tells you what system you're in. Parliamentary legislatures can question and censure cabinet ministers directly. In presidential systems like Mexico and Nigeria, the cabinet answers to the president, and the legislature can only reach it through impeachment.
Checks and Balances (Unit 2)
Legislative independence is a two-way street. Legislatures check executives through removal procedures and refusing to pass bills, but they also get checked, sometimes by courts and sometimes by unelected bodies like Iran's Guardian Council or China's Politburo Standing Committee.
Multiple-choice questions love legislative independence comparisons. Expect stems like "How does China's legislative independence differ from the UK's?" or questions about how the Politburo Standing Committee controls the NPC's agenda, or what the Iranian Majles reveals about legislatures in hybrid regimes. You need to do more than define a legislature. You have to explain who actually holds lawmaking power in each country and why. On the free-response side, Comparative Analysis Questions frequently ask you to compare institutions across two course countries, like the 2017 CAQ on cabinets, which requires knowing how legislatures interact with the executive in different systems. Strong answers use country-specific institution names (Majles, NPC, House of Commons, Duma) instead of just saying "the legislature."
Every parliament is a legislature, but not every legislature is a parliament. "Parliament" implies a parliamentary system where the legislature selects and can remove the head of government, like the UK. Mexico's and Nigeria's legislatures are congresses in presidential systems, elected separately from the executive for fixed terms. If you call Nigeria's National Assembly a "parliament" on an FRQ, you're signaling you don't know the difference between the systems.
A legislature is the lawmaking branch of government, but in AP Comp Gov the key question is always how much real power and independence it has.
In parliamentary systems like the UK, the legislature selects and can remove the head of government; in presidential systems like Mexico and Nigeria, the legislature is elected separately and can only remove executives through impeachment.
China's National People's Congress is constrained by the Politburo Standing Committee (the actual center of power) and the NPC Standing Committee, which sets the agenda and handles legislative duties most of the year.
Iran's Majles is elected, but its independence is limited by the Guardian Council's vetting power and the Expediency Council, which the Supreme Leader appoints to resolve disputes.
Parliaments check executives by censuring cabinet ministers, refusing to pass executive-proposed legislation, questioning ministers, and forcing new elections.
On FRQs, name the specific legislature (Majles, NPC, House of Commons, National Assembly, Duma) instead of writing the generic word "legislature."
It's the governmental institution with the power to make laws, usually composed of elected representatives. All six course countries have one, but they vary hugely in independence, from the UK's powerful House of Commons to China's largely symbolic National People's Congress.
On paper yes, in practice not really. The NPC is China's formal legislature, but the Politburo Standing Committee is the actual center of power, and the NPC Standing Committee sets the agenda, supervises member elections, and handles legislative duties for most of the year while the full NPC isn't in session.
A parliament is a specific type of legislature found in parliamentary systems, where it selects and can remove the head of government (like the UK). Legislatures in presidential systems, like Mexico's Congress or Nigeria's National Assembly, are elected separately from the executive and serve fixed terms.
It depends on the system. Parliamentary legislatures can remove the prime minister through a vote of no confidence, while presidential systems like Mexico and Nigeria require impeachment, a harder and rarer process. This removal power is a core check on executive abuse covered in Topic 2.5.
The UK (Commons and Lords), Mexico (Chamber of Deputies and Senate), Nigeria (House of Representatives and Senate), and Russia (Duma and Federation Council) are bicameral. China's NPC and Iran's Majles are unicameral.
Connect this key term to the AP exam workflow: review the course, practice questions, and check related study tools.
Review units, study guides, and course resources.
Check this vocabulary in multiple-choice context.
Apply key concepts in written AP responses.
Estimate the exam score you are working toward.
Review the highest-yield facts before practice.
Put the full course together before test day.