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Last Updated: July 31, 2026
Main Ideas: 5
Reading Time: 6 min
Last Updated: July 31, 2026
Main Ideas: 5

Topic 2.4 Notes – Executive Term Limits

Verified for 2027 AP® Comparative Government & Politics Exam
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Executive term limits are rules about how long a chief executive can stay in office. This topic is about what those rules actually mean, the different forms they take, and why the same rule can limit power in one country but barely matter in another.

What Executive Term Limits Are

A term is one period in office. A term limit is the cap on how many terms, or how much total time, one person may serve as chief executive.

That sounds simple, but the exam likes to make you separate the rule on paper from what happens in real politics.

  • Term limits are scheduled exits. They make a leader leave after the allowed service ends.
  • Removal is different. Impeachment, no confidence votes, resignation, incapacity, and coups push a leader out early.
  • You always have to ask which executive office is limited.
    • In Iran, the president is limited.
    • The Supreme Leader is not.
    • In the UK, the prime minister has no formal term limit.
  • A written rule is de jure. What actually constrains power is de facto. A leader may still dominate through party control, changing offices, changing the constitution, or controlling a successor.

Main Types of Executive Term-Limit Rules

Different countries limit executives in different ways, and the difference matters.

  • No reelection at all
    • One term only.
    • Mexico’s president gets one six-year term, the sexenio.
    • This is the strongest rule for forcing personal turnover.
  • Fixed number of lifetime terms
    • A leader can serve only a certain number of terms total, ever.
    • This is a useful comparison idea, even if it is not the main pattern in the AP countries.
  • Fixed number of consecutive terms
    • A leader can serve a set number in a row, then possibly come back later.
    • Nigeria has a two-term maximum for presidents, with four-year terms.
    • Iran’s president can serve two consecutive four-year terms, then return after a break.
    • Russia’s earlier rule blocked a third consecutive term, which opened the door to Putin switching offices.
  • No formal personal term limit
    • UK prime minister stays in office as long as they lead the governing party and keep Commons confidence.
    • Iran’s Supreme Leader has no fixed term limit.
  • Limits can be removed or reset
    • China, 2018 removed the two-term limit on the state presidency.
    • Russia, 2020 reset Putin’s previous terms.

Why Countries Use Term Limits and Why They Criticize Them

Term limits create a tradeoff between institutional stability and policy continuity.

Advantages

  • They check executive power and reduce the risk of dictatorship, personal rule, and cults of personality.
  • They make succession predictable, which can stabilize politics.
  • They can let executives focus more on governing than reelection.
  • They open room for new leaders, new factions, and new ideas.
  • They reinforce the idea that institutions matter more than one person.

Disadvantages

  • They can force out a good or popular leader.
  • One term may be too short to design and complete policy.
  • They can interrupt policy continuity when successors reverse course.
  • Final-term leaders lose some electoral accountability because voters cannot reelect or reject them.
  • They create lame-duck periods as elites turn toward the next leader.
  • They limit the value of executive experience and can encourage rushed policy.

Course Country Patterns and Key Examples

CountryRuleWhy it matters
MexicoOne six-year term, no reelectionStrictest presidential limit; PRI era showed turnover of presidents without real party turnover
NigeriaTwo four-year presidential termsObasanjo’s failed 2006 third-term attempt showed institutions can enforce limits
IranPresident limited; Supreme Leader not limitedLimiting the weaker executive does not limit the top authority
ChinaPresidential two-term limit removed in 2018Xi got a third term in 2023; party and military posts were always more important
RussiaFormal limits, but workarounds and resetsPutin switched with Medvedev, then 2020 amendments reset the count
United KingdomNo formal PM term limitTenure depends on party leadership, elections, and Commons confidence

How to Compare Term Limits on the Exam

Good comparisons usually move through three questions in order:

  1. Which executive office are we talking about?
  2. What is the actual rule?
  3. Does it work in practice?

That gives you strong comparisons fast:

  • Mexico and Nigeria have clearer constitutional presidential limits.
  • China and Russia show leaders removing or bypassing limits.
  • Iran shows that limiting one executive may leave the real center of power untouched.
  • UK shows parliamentary accountability working instead of a formal cap.

A strong thesis sounds like this idea in plain English: term limits only check personal rule when institutions and norms can actually make leaders leave office.

Key Takeaways

A term limit matters only if you identify the specific executive office being limited.
Mexico limits personal presidential rule most strictly, but that did not automatically end PRI dominance.
Iran is the classic case where a presidential term limit does not limit the regime’s highest authority.
Russia is the best example of a formal rule that failed to constrain power in practice.
China’s 2018 amendment matters less for the office title alone than for how it helped Xi keep all major leadership posts together.
The UK has no prime ministerial term limit, but party leadership and Commons confidence still remove prime ministers.
Term limits can strengthen institutions over time even when they weaken short-term policy continuity and accountability.

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