AP Comparative Government
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๐Ÿ—ณ๏ธap comparative government review

2.2 Comparing Parliamentary, Presidential, and Semi-Presidential Systems

Verified for the 2025 AP Comparative Government examโ€ขCitation:

Comparing Parliamentary, Presidential, and Semi-Presidential Systems

In topic 2.1, we focused on the structures ๐Ÿ—๏ธ of Parliamentary, Presidential, and Semi-Presidential systems and we explored how these systems are implemented in several of our Comp Gov countries (Parliamentary in the UK, Presidential in Mexico, and Semi-Presidential in Russia).

Let's now turn our focus ๐Ÿ’ก to comparing each of these systems in regards to their function and structure, as well as how each system allocates power.

Let's look at a quick chart together ๐Ÿ‘€ so we can better compare the structures and functions of each of the systems we studied in topic 2.1

Pt. of ComparisonParliamentary SystemPresidential SystemSemi-Presidential System
BranchesNo separation of powersSeparation of powersSeparation of powers
PowerLies with the legislatureSpecific powers within each branchSpecific powers within each branch
ElectionsLegislature elected by the people directlyExecutive and legislative branches voted on by the people directlyExecutive branch voted on by the people directly/President appoints prime Minister and cabinet
RolesPrime MinisterPresident/LegislaturePresident/Prime Minister coexist
FunctionTypically less gridlockGridlock is common problemLittle gridlock as Prime Minister is typically an administrative role

Explanations

  • Parliamentary Systems:
    • In the UK ๐Ÿ‡ฌ๐Ÿ‡ง, there is no separation of powers. The legislature and executive branch are one 1๏ธโƒฃ. This is the complete opposite of a presidential system like Mexico, where the branches are separated.
    • In the UK, power is fused ๐Ÿคฒ between the executive and legislative branches, so there are far fewer obstacles to get legislation passed โœ… as the legislature is serving the prime minister (and remember, the legislature chooses the prime minister).
    • A good example of this would be devolution in the UK. This happened very quickly in the late 1990s because the prime minister in control at the time โฒ๏ธ came from the majority party in Parliament.
      • Forgot ๐Ÿค” about devolution from Unit 1? Check out: ๐Ÿ“ Read: AP Comp Govโ€”Unit 1 Study Guide <>
  • Presidential System
    • In Nigeria ๐Ÿ‡ณ๐Ÿ‡ฌ, the branches and powers are separated, and that creates a greater series of checks and balances โš–๏ธ An example of a check on power would be when the president had his budget ๐Ÿค‘ rejected by the senate in 2016 because it relied too heavily on foreign loans. ๐Ÿ’ธ

Presidential vs Semi-Presidential (Or not?!)

The AP Exam does NOT mention a comparison of parliamentary systems or presidential systems with semi-presidential systems. Let's spend a moment to talk about why ๐Ÿค”

The only course country that uses this system is Russia. Russia ๐Ÿ‡ท๐Ÿ‡บ is a difficult point of comparison for the following two 2๏ธโƒฃ reasons:

  1. Vladimir Putin: In Russia's semi-presidential system, the president and the prime minister co-exist and complement each other. However, Putin is in clear control ๐Ÿ’ช as President. The only Prime Minister of note in the modern era is Mishustin in 2008, so this makes it difficult to compare as an authoritarian ๐Ÿ‘‘ regime.
  2. Itโ€™s Increasingly Authoritarian Regime: The course countries that represent parliamentary and presidential systems are democratic ๐Ÿ™‹regimes (UK, Mexico, and Nigeria). The semi-presidential example, Russia, is an authoritarian ๐Ÿ‘‘ regime. This makes it difficult to compare the systems because the regimes are not comparable in regards to who makes decisions. In authoritarian regimes, political elites, like Vladimir Putin, make decisions without much input from citizens. This is very different from the UK, Mexico, and Nigeria, where citizens have greater decision-making ability through elections. In Mexico and Nigeria, different parties can win elections, and have. In Russia ๐Ÿ‡ท๐Ÿ‡บ, the United Russia Party has not lost an election in the modern era.

Although the parliamentary system tends to be more efficient โœ… with policy making, there is no separation of power between the executive ๐Ÿ‘ฉโ€โš–๏ธ and legislative branches. However, some checks and balances โš–๏ธ STILL exist despite the fused powers. Let's go through a few examples from the UK, our prime example of the parliamentary system.

Checks and Balances in a Parliamentary System

  1. Elections: In 2011 the Commons passed a law ๐Ÿ“œ allowing for a fixed-term election system. The UK now has fixed-term elections every five 5๏ธโƒฃ years for the House of Commons. This is a way of checking the Prime Minister's power. Remember that the prime minister is selected by the majority party in Parliament. This is a perfect example of what many governments call "imposing time deadlines on calling new elections."1.
    1. You may still be asking yourself, โ€How does the Parliament choose the Prime Minister after people vote?โ€ Here is a quick rundown to how the Prime Minister is selected in one of our core countries, the UK ๐Ÿ‡ฌ๐Ÿ‡ง: If a PM loses the trusty of the parliament, or decides to resign, the monarch invites a member of the ruling party (or the opposition!) to command. If the PM cannot be selected this way, the parliament may call for a General Election.
  2. Questions of the Executive: In the UK, the House of Commons regularly holds Questions with the prime minister. If you want a good time, you should watch some examples of this! It's very different from US politics and highly entertaining. This regular event allows the opposition and majority party to ask questions of the prime minister and the cabinet. Click here to watch past Prime Minister's Questions.
  3. Censure: Censure is a formal expression of disapproval. This is often done against cabinet members.
    1. Although the U.S. is not in AP Comparative Government, take Al Greenโ€™s Censure. He was formally censured for "breach of proper conduct.โ€ to check dissent.

Now you understand how power ๐Ÿ‘‘ is allocated differently in a parliament system than in a presidential one. In the next study guide, you will learn more about the structure of the executive branch.

Key Terms to Review (11)

Authoritarian Regime: An authoritarian regime refers to an oppressive form of government where political power rests in one leader or group, who exercise authority without meaningful checks or balances.
Checks and Balances: Checks and balances refer to mechanisms within a political system that limit each branch's powers and prevent any one branch from becoming too powerful. It ensures a system of shared powers and prevents abuses of power.
Devolution: Devolution is the transfer of power and decision-making authority from a central government to regional or local governments within a country. It aims to decentralize political power and give more autonomy to subnational units.
Fixed-term elections: Fixed-term elections refer to elections that are held on a predetermined schedule or date, rather than being called at any time by those in power. This helps ensure regularity and stability in democratic systems.
House of Commons: The House of Commons is the lower house of the British Parliament and other parliamentary systems. It is composed of elected representatives who debate and pass laws.
Parliamentary System: A parliamentary system is a form of government where executive power is vested in an elected legislature (parliament) which chooses a prime minister or head of government.
Presidential System: A presidential system is a form of government where there is a separation between the executive and legislative branches, with an elected president serving as both head of state and head of government.
Prime Minister's Questions: Prime Minister's Questions (PMQs) is a weekly session in the British Parliament where Members of Parliament (MPs) have the opportunity to question the Prime Minister on current issues and government policies.
Semi-Presidential System: A semi-presidential system combines elements of both parliamentary and presidential systems. It features an elected president as head of state alongside a prime minister who is responsible for the day-to-day governance.
Separation of Powers: Separation of powers refers to the division of governmental responsibilities among different branches (typically executive, legislative, and judicial) to prevent any one branch from becoming too powerful. Each branch has its own distinct powers and functions.
United Russia party: United Russia is currently Russia's ruling political party. It supports President Vladimir Putin's policies and has dominated Russian politics since its establishment in 2001.