---
title: "Twenty-Fifth Amendment — AP Gov Definition & Exam Guide"
description: "The 25th Amendment (1967) sets the rules for presidential succession, VP vacancies, and presidential disability. Know how it differs from impeachment for AP Gov."
canonical: "https://fiveable.me/ap-gov/key-terms/twenty-fifth-amendment"
type: "key-term"
subject: "AP US Government"
---

# Twenty-Fifth Amendment — AP Gov Definition & Exam Guide

## Definition

The Twenty-Fifth Amendment (ratified 1967) is the constitutional amendment that formalizes presidential succession, lets the president fill a vice presidential vacancy with congressional approval, and creates procedures for transferring power when a president is unable to serve.

## What It Is

The Twenty-Fifth Amendment answers a question the original [Constitution](/ap-gov/key-terms/constitution "fv-autolink") left fuzzy. What exactly happens when the [president](/ap-gov/unit-1/principles-american-government/study-guide/BXlQvFOiaKwhntWYhgKP "fv-autolink") dies, resigns, is removed, or just can't do the job? Ratified in 1967 after President Kennedy's assassination exposed the gaps, it has four sections. Section 1 makes it official that the vice president *becomes* president (not just "acting" president) if the office is vacant. Section 2 lets the president nominate a new vice president when that office is empty, subject to a majority vote in both houses of Congress. Section 3 lets a president voluntarily and temporarily hand power to the VP, like before surgery. Section 4 lets the vice president plus a majority of the Cabinet declare the president unable to serve, making the VP acting president.

For [AP Gov](/ap-gov "fv-autolink"), the amendment matters as a structural fix that keeps executive power continuous and legitimate. Section 2 has been used twice, both in the 1970s. Gerald Ford was confirmed as VP in 1973 after Spiro Agnew resigned, and Nelson Rockefeller was confirmed after Ford became president when Nixon resigned in 1974. That makes Ford the only person to serve as both VP and president without being elected to either office. Section 4 has never been invoked.

## Why It Matters

In the CED, this term sits in Topic 3.8 (Amendments) in [Unit 3](/ap-gov/unit-3 "fv-autolink"), where the focus is on how constitutional amendments shape and limit government power. The Twenty-Fifth is the procedural amendment of the bunch. While most of Topic 3.8 deals with due process and the rights of the accused (LO 3.8.A), the Twenty-Fifth Amendment shows the other thing amendments do, which is patch structural holes in [the Constitution](/ap-gov/key-terms/the-constitution "fv-autolink") itself. It also reaches back into the Unit 2 material on the presidency, since you can't fully explain presidential power, succession, or the vice presidency without it. If an exam question asks how the constitutional system maintains continuity of executive power, this amendment plus the Presidential Succession Act is the answer.

## Connections

### Impeachment (Unit 2)

These are the two constitutional ways a president can lose power, but they answer different questions. Impeachment is about misconduct and is run by Congress. The Twenty-Fifth Amendment is about inability and is triggered by the [executive branch](/ap-gov/key-terms/executive-branch "fv-autolink") itself (the president, or the VP plus the Cabinet).

### [Vice President (Unit 2)](/ap-gov/key-terms/vice-president)

The amendment transformed the vice presidency. Before 1967, a VP vacancy just stayed empty until the next election. Section 2 created the nomination-and-confirmation process, which is how Gerald Ford and Nelson Rockefeller both got the job without ever being on a national ballot.

### Presidential Succession Act (Unit 2)

The amendment only handles the president-to-VP handoff. The [Presidential Succession](/ap-gov/key-terms/presidential-succession "fv-autolink") Act is the ordinary law that keeps the line going after that, through the Speaker of the House, the Senate president pro tempore, and the Cabinet. Constitution first, statute second.

### [Fifteenth Amendment (Unit 3)](/ap-gov/key-terms/fifteenth-amendment)

Putting these side by side shows the two big jobs [amendments](/ap-gov/unit-3/bill-rights/study-guide/8ACJ8vcRoyV1USjaahKe "fv-autolink") do in the AP Gov framework. The Fifteenth expands rights (voting regardless of race), while the Twenty-Fifth fixes machinery (succession). Topic 3.8 expects you to see amendments as tools for both.

## On the AP Exam

No released FRQ has used this term verbatim, but it's solid multiple-choice material and a useful supporting fact in FRQs about presidential power or the formal amendment process. MCQs tend to test the specifics, such as what each section does, that the VP fully becomes president under Section 1, that filling a VP vacancy requires a majority of both houses, and that Section 4 (involuntary removal for inability) has never been used. The classic trap answer confuses the Twenty-Fifth Amendment with impeachment, so be ready to say which mechanism applies to which situation. In a Concept Application FRQ about a presidential health crisis or transfer of power, naming Section 3 or Section 4 precisely is what earns the point.

## Twenty-Fifth Amendment vs Impeachment

Impeachment removes a president for wrongdoing ("high crimes and misdemeanors") through a House vote and Senate trial, and it's permanent. The Twenty-Fifth Amendment addresses inability, not guilt. It can be temporary (Section 3 handoffs last hours), and Section 4 is initiated by the vice president and Cabinet, not Congress. If the scenario involves misconduct, think impeachment. If it involves incapacity, think Twenty-Fifth Amendment.

## Key Takeaways

- The Twenty-Fifth Amendment, ratified in 1967 after JFK's assassination, formalizes presidential succession and disability procedures.
- Section 1 makes the vice president the actual president, not a placeholder, when the presidency becomes vacant.
- Section 2 lets the president fill a vice presidential vacancy with a nominee confirmed by a majority of both houses of Congress, which is how Gerald Ford and Nelson Rockefeller became VP in the 1970s.
- Sections 3 and 4 cover presidential inability. Section 3 is voluntary and has been used for medical procedures, while Section 4 (VP plus a Cabinet majority declaring the president unable) has never been invoked.
- Don't confuse it with impeachment. Impeachment is Congress removing a president for misconduct, while the Twenty-Fifth handles incapacity and is triggered from inside the executive branch.
- In the CED, it lives in Topic 3.8 (Amendments) as an example of an amendment that fixes constitutional structure rather than expanding individual rights.

## FAQs

### What is the Twenty-Fifth Amendment in AP Gov?

It's the 1967 amendment that sets the rules for presidential succession and disability. It confirms the VP becomes president if the office is vacant, creates a process to fill a VP vacancy, and provides for temporary or involuntary transfers of power when a president can't serve.

### Has Section 4 of the 25th Amendment ever been used to remove a president?

No. Section 4, which lets the vice president and a majority of the Cabinet declare the president unable to serve, has never been invoked. Section 3 (voluntary, temporary transfers) has been used, for example when Reagan had surgery in 1985.

### How is the 25th Amendment different from impeachment?

Impeachment removes a president for misconduct through a House vote and Senate trial, and Congress drives the whole process. The Twenty-Fifth Amendment deals with inability to serve, can be temporary, and Section 4 is initiated by the VP and Cabinet rather than Congress.

### Who became vice president through the 25th Amendment?

Gerald Ford in 1973, after Spiro Agnew resigned, and Nelson Rockefeller in 1974, after Ford moved up when Nixon resigned. Both were nominated by the president and confirmed by majority votes in both houses under Section 2.

### Is the 25th Amendment on the AP Gov exam?

Yes. It maps to Topic 3.8 (Amendments) in Unit 3 and connects to Unit 2's coverage of the presidency. It typically shows up in multiple-choice questions about succession procedures or in scenarios asking how power transfers when a president can't serve.

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