The People's Party (PP) has learned its lesson from supporting Anutin Charnvirakul's bid for the premiership, deputy leader Sirikanya Tansakun said on Monday, apologising to the public and ruling out future cooperation with the ruling Bhumjaithai Party (BJT).

Speaking at parliament, Ms Sirikanya was asked about speculation over possible coalition realignments if the current government bloc fails to command enough parliamentary support.

She said a coalition between the "red" (Pheu Thai Party) and "green" (Klatham Party) camps alone might not be sufficient, leaving two possibilities: either negotiations to keep the current coalition together or talks to form a new government. In either case, she said, discussions would also have to involve the PP for any political equation to be complete.

When asked whether the PP remained open to talks, Ms Sirikanya said political discussions were always possible. However, she drew a clear distinction regarding the BJT, commonly referred to as the "blue camp."

"Yes," she replied when asked whether the door was completely closed to any cooperation with the BJT. "We have already learned our lesson," she said.

"At the time, we did not know that the agreement we had reached would later be broken. It taught us that we cannot simply assume others will honour their commitments."

She apologised to the public, saying the party's decision had disappointed many voters. "I sincerely apologise to the public. Our decision that day was one of the reasons Bhumjaithai has reached where it is today. People may analyse it differently, but we apologise -- and we've learned our lesson," she said.

The PP has faced sustained criticism from political opponents and its own supporters for its decision in September 2025 to vote for Mr Anutin, the BJT leader, to become prime minister after the removal of the previous government. The PP argued at the time that its support was conditional and intended to prevent prolonged political deadlock rather than to join the government. Under a memorandum of agreement, Mr Anutin was expected to lead a minority administration, dissolve parliament within four months and begin the process of constitutional reform. The PP remained in opposition and did not take cabinet positions.

Meanwhile, Prime Minister Anutin on Monday welcomed the opposition's planned no-confidence motion, saying the government had nothing to fear. He said parliamentary scrutiny was a normal part of the democratic process and the opposition should be commended for carrying out its duty.