In December 2008, the party came under fire as its deputy chairman, Yongyuth Tiyapairat, faced charges of electoral fraud concerning the 2007 general election.

Former Bangkok governor Samak Sundaravej, who later declared himself as the 'nominee' of Thaksin Sinawatra, and former TRT Cabinet Minister Surapong Suebwonglee were elected People's Power Party leader and secretary general respectively on August 24, 2007.

[5] After some former TRT members joined the PPP, the junta allegedly issued a classified order to suppress the activities of the Party.

Its deputy leader Yongyuth Tiyapairat was banned from politics for 5 years after the Supreme Court affirmed vote buying charges against him.

The Constitutional Court ruled on July 8 that Foreign Minister Noppadon Pattama and the entire PPP cabinet violated its charter by failing to ask parliamentary approval for a bilateral agreement with Cambodia, signed by Noppadon in June to support Cambodia's bid to seek World Heritage status for the 900-year-old Preah Vihear Temple.

[7] The Opposition filed a petition with deputy Senate Speaker Nikom Wairatpanit to impeach Noppadon over the issue of the temple.

The PPP has promised to offer amnesty for all banned TRT politicians including Thaksin Shinawatra, and to remove any charges against him.

The PPP's primary voter bases were the former TRT strongholds of the North, Northeast, East and Central regions of Thailand.