EXPLAINER: What is the Senate President Pro Tempore?

The Senate President Pro Tempore has become a focal point in the ongoing leadership battle in the Senate after Senator Sherwin Gatchalian was elected Senate President Pro Tempore and assumed the post of acting Senate President during Wednesday's session.

Gatchalian's election came after the Senate finally obtained a quorum, allowing senators to proceed with session and approve new committee chairmanships amid weeks of political maneuvering over the chamber's leadership.

What is the Senate President Pro Tempore?

The Senate President Pro Tempore is the second-highest-ranking official in the Senate and is elected by fellow senators.

The official serves as the Senate's presiding officer whenever the Senate President is absent or unable to perform his duties. In parliamentary terms, the position acts as the chamber's designated substitute leader.

What does the Senate President Pro Tempore do?

The Senate President Pro Tempore's primary function is to ensure that Senate proceedings continue even when the Senate President is unavailable.

Among the duties associated with the post are:

• Presiding over Senate sessions in the absence of the Senate President;
• Exercising the powers and functions of the Senate President when the latter is temporarily unable to perform official duties; and
• Acting as Senate President when circumstances require it under Senate rules.

Because of these responsibilities, the position is often considered the Senate's No. 2 leadership post.

Why is the position significant now?

The role has taken on added importance amid the leadership struggle that has gripped the Senate in recent weeks.

Before Wednesday's developments, several senators belonging to the so-called Solid Bloc 11 had publicly expressed support for Gatchalian as a potential Senate President.

Instead, the Senate elected him as Senate President Pro Tempore, after which he assumed the role of acting Senate President during the session.

The development placed Gatchalian at the center of the chamber's efforts to resume legislative work, including the approval of new committee assignments and discussions on pending Senate matters.

Who is ahead in the Senate hierarchy?

The Senate leadership structure generally follows this order: Senate President, Senate President Pro Tempore, Majority Leader, Minority Leader.

As the Senate President's designated substitute, the Senate President Pro Tempore plays a crucial role whenever questions arise regarding leadership continuity and the conduct of Senate proceedings.

In short, the Senate President Pro Tempore serves as the Senate's second-highest-ranking officer and acting presiding official when needed—making the position particularly significant during periods of leadership transition or political uncertainty within the chamber. —Sherylin Untalan/LDF/BAP, GMA News