The 23rd House of Representatives of Thailand consisted of 480 members elected in the 23 December 2007 election, and served until its dissolution on 10 May 2011.

It saw three prime ministerships: those of Samak Sundaravej (29 January – 8 September 2008), Somchai Wongsawat (8 September – 2 December 2008), and Abhisit Vejjajiva (17 December 2008 – 5 August 2011).

December 2008 prime minister election The house's third vote for prime minister was held on 15 December 2008. After the People's Power Party was dissolved by the Constitutional Court on 2 December 2008, Somchai Wongsawat was banned from politics for 5 years. He was then removed along with several other members of the Cabinet. Chaovarat Chanweerakul was appointed acting Prime Minister until House Speaker Chai Chidchob sent a letter inviting members to attend the choosing of a prime minister on 15 December 2008, at 09:30-11:30. Banyat Bantadtan proposed Abhisit Vejjajiva, while Sanoh Thienthong proposed Pracha Promnok.

Results By candidate CandidatePartyVotes%Samak SundaravejPeople's Power310Abhisit VejjajivaDemocrat163Invalid/blank votes1Abstentions3Total votes474Total seat477100.00

By candidate CandidatePartyVotes%Somchai WongsawatPeople's Power298Abhisit VejjajivaDemocrat163Invalid/blank votes0Abstentions5Total votes461Total seat466100.00

By candidate CandidatePartyVotes%Abhisit VejjajivaDemocrat23553.65Pracha PromnokPueu Pandin19845.21Invalid/blank votes30.68Abstentions20.46Total votes43699.54Total seat438100.00

By party PartyAbhisit VejjajivaPracha PromnokNo votesNo attendTotalPheu Thai -178 - -178Democrat163 -11165Pueu Pandin129 - -21Chartthaipattana141 - -15Bhumjaithai83 - -11Chart Pattana52119Pracharaj Party -5 - -5Newin Friend Group22 -1 -23Others11 - - -11Total23519832438

References อภิสิทธิ์-ประชา" ลุ้นระทึก! ศึกชิงเก้าอี้นายก Clip โหวตเลือกนายกฯคนที่ 27 รายชื่อ ส.ส. ใครเลือกใคร