12/09/2026
Under Article XI of the 1987 Philippine Constitution, the "two-thirds (2/3)" voting threshold appears in Section 3(6) as a mandatory legal requirement for convicting and removing an impeachable officer, including a sitting Vice President.
The constitutional mechanism works through a multi-step process, followed by two distinct legal interpretations regarding how the 2/3 threshold is calculated.
The Constitutional Process
| Stage | Body Responsible | Vote / Threshold Required | Constitutional Function |
|---|---|---|---|
| Initiation / Impeachment | House of Representatives | 1/3 vote of all Members | Transmits the Articles of Impeachment to the Senate for trial. |
| Trial & Conviction | Senate (sitting as an Impeachment Court) | 2/3 vote of all Members | Decides whether to convict or acquit the official. |
Note: Under Article XI, Section 3(6), the Chief Justice of the Supreme Court presides over an impeachment trial only when the President is on trial. When a Vice President is on trial, the Senate President presides.
Interpretation of the "2/3 Vote" Threshold
The text of Article XI, Section 3(6) states:
> "No person shall be convicted without the concurrence of two-thirds of all the Members of the Senate."
>
Legal scholars and constitutional experts divide into two primary interpretations of this clause:
1. Strict Structural Reading (Fixed Total)
* The Rule: The "all members" phrase refers to the total constitutional composition of the Senate (24 members).
* Calculation: 2/3 of 24 = 16 votes.
* Rationale: The framers intended for an elected executive official to be removed only under a extraordinarily high hurdle. Under this view, suspended, absent, or non-participating senators still count toward the total denominator, meaning any missing or abstaining senator effectively acts as a vote against conviction.
2. Functional/Qualified Reading (Active Members Only)
* The Rule: "All members" refers only to senators who are legally qualified, present, and able to participate in the proceedings.
* Calculation: If any senators are unseated, legally incapacitated, or unable to attend, the denominator decreases, lowering the 2/3 requirement proportionately (e.g., 2/3 of 21 active senators = 14 votes).
* Rationale: A fixed denominator of 24 regardless of circumstances could lead to an "acquittal by default" if several senators cannot physically or legally vote. This interpretation prioritizes the practical functioning of the impeachment court.
Consequences of a 2/3 Vote
* If 2/3 Concurrence is Reached: The Vice President is immediately convicted and removed from office. Under Section 3(7), judgment can also include perpetual disqualification from holding any public office in the Philippines.
* If Less than 2/3 Concur: The Vice President is acquitted and remains in office.
* Subsequent Criminal Liability: An impeachment conviction is purely political. The official remains subject to ordinary criminal, civil, or administrative prosecution in regular courts.
Gemini
