2 defections could tip Senate power balance

LocalPolitics
31 May 2026 • 12:12 AM MYT
The Manila Times
The Manila Times

One of the longest-running English broadsheets in the Philippines

2 defections could tip Senate power balance

TWO senators from the majority bloc may be ready to switch sides soon to unseat Senate President Alan Peter Cayetano and spark another major shakeup in the upper chamber, Sen. Panfilo Lacson said over the weekend.

Lacson did not identify the lawmakers but said there were indications that some members of the majority were reconsidering their political alignment amid ongoing tensions within the Senate.

His remarks come at a time of heightened political maneuvering and instability in the chamber, which prepares to convene as an impeachment court for the trial of Vice President Sara Duterte.

While Lacson suggested that two senators had expressed their intent to break away from the majority bloc, he stopped short of naming them, saying that discussions remain fluid and no formal defections have been confirmed.

The lack of specifics has led to widespread speculation in political circles, but no senator has publicly confirmed any intention to transfer to the minority bloc or withdraw support from Cayetano’s leadership.

Numbers remain tight

Cayetano was elected Senate president with the support of 13 senators, while nine backed then-Senate president Vicente Sotto III, and two abstained during the leadership vote.

The two abstainers have since joined the minority bloc, leading to a slim margin vulnerable to shifts in allegiance, where even a small number of defections could alter the chamber’s leadership balance.

Political observers note that if two majority senators were to align with the minority bloc, it could significantly weaken Cayetano’s position and potentially trigger another leadership challenge.

Positioning

The Senate minority has been actively consolidating its ranks, with several senators advocating for a more unified opposition stance on key issues, including Senate rules and impeachment procedures.

Discussions have also circulated about possible compromise leadership arrangements should a vacancy arise, though no formal agreement has been reached among minority members.

The reported political maneuvering comes as the Senate prepares for Duterte’s impeachment trial, a process expected to test the chamber’s internal cohesion.

Some lawmakers have raised concerns that proposed changes to Senate rules, including allowing absent senators to vote electronically, could influence the dynamics of the trial, though supporters of the majority bloc have denied any intent to affect the outcome of the proceedings.

Fluid political landscape

Despite growing speculation, no verified confirmation has emerged regarding any planned defections, and Senate leadership continues to operate under Cayetano’s majority coalition.

Political analysts say the situation underscores the fluid nature of Senate alliances, where shifting coalitions are not uncommon, particularly during high-stakes legislative and constitutional processes.

As the impeachment trial approaches, attention remains focused not only on the proceedings themselves but also on whether the current balance of power in the Senate will hold.