House of Representatives (Thailand)

House of Representatives


Sapha Phuthaen Ratsadon
26th House of Representatives
Coat of arms or logo
Seal of the National Assembly of Thailand
Wan Muhamad Noor Matha, Prachachart
since 5 July 2023
First Deputy Speaker
Padipat Suntiphada, Move Forward
since 5 July 2023
Second Deputy Speaker
Pichet Chuamuangphan, Pheu Thai
since 5 July 2023
Srettha Thavisin, Pheu Thai
since 22 August 2023
Government Chief Whip
Adisorn Piangkes, Pheu Thai
since 14 September 2023
since 20 March 2023
Opposition Chief Whip
since 20 March 2023
Political groups
Length of term
Up to four years
Parallel voting:
First past the post (400 seats)
Party-list proportional representation (100 seats)
Last election
14 May 2023
Next election
No later than 27 June 2027
Meeting place
Phra Suriyan Chamber
Dusit District
Bangkok, Thailand
Parliament Rules

The House of Representatives (Thai: สภาผู้แทนราษฎร, RTGSSapha Phuthaen Ratsadon, pronounced [sā.pʰāː pʰûː.tʰɛ̄ːn râːt.sā.dɔ̄ːn]) is the lower house of the National Assembly of Thailand, the legislative branch of the Thai government. The system of government of Thailand is that of a constitutional monarchy and a parliamentary democracy. The system of the Thai legislative branch is modelled after the Westminster system. The House of Representatives has 500 members, of which 400 are elected through single member constituency elections, while the other 100 are chosen through party lists parallel voting.

The House of Representatives was temporarily abolished as a result of the 2014 Thai coup d'état and replaced with the unicameral National Legislative Assembly, a body of 250 members, selected by the National Council for Peace and Order. After the 2017 Constitution was promulgated in April 2017, the House of Representatives was reestablished.


Bill consideration

The Cabinet, no less than 20 members of parliament, or 10,000 eligible voters through a petition may introduce a bill. However, if it is a money bill (a bill that has provisions concerning taxes, budgetary affairs or currency), it may be introduced only with the endorsement of the Prime Minister.

Where a bill's status as a money bill may be in question, a session between the speaker and all house committee chairs maybe convened to consider the status of the bill. The decision is made by a simple majority vote. If the vote is tied, the speaker must cast a tie-breaking vote.

When the process of consideration ends in the House and the bill is agreed to, the bill is sent to the senate for further deliberations; of which the process must be done within 60 days. The deadline for money bills is 30 days. If the senate is not able to deliberate within the time limit, the bill is considered to be agreed to by the senate.

If the bill is agreed to by the whole of the National Assembly, the prime minister must wait 5 days in order to give people the opportunity to challenge the bill's constitutionality. After which, the prime minister has 20 days to present the bill to the monarch for royal assent.

Any emergency act passed by the cabinet must be sent to the house for consideration without delay to be examined. If the house approves of the emergency act, it becomes an ordinary act. If not, the emergency act ceases to have effect after the decision has been published in the government gazette for one day.

Budget consideration

The 2017 Thai Constitution stipulates that the budget must be written in the form of an act, and in the introduction of a budget bill the government must show sources of income and estimates of further income, standards and measures of outcome and relevance to the 20 Year National Strategy and other national development plans. The budget must also adhere to guidelines outlined in the State Fiscal and Financial Disciplines Act.

The process of considering the budget is almost the same as considering a bill, although the deliberation deadline is extended to 105 days, and the senate is not able to amend the budget and must vote on it within 20 days.

Scrutiny of the government

Questioning a minister

A member of parliament may submit a question to a minister both in writing and orally. Questions to a minister may be asked without the question being submitted in advance. A minister may refuse to answer the question if the answer would risk national security or if they consider it not to be in the national interest.

Ministers assigning civil servants or other people to answer in their place is commonplace practice rather than the exception.

Motion of no confidence

No less than one fifth of all the members of parliament may introduce a motion to debate about a vote of no confidence in individual ministers or the entire cabinet. A simple majority is required for the motion to pass, and subsequently for the minister or the entire cabinet to cease.

Creation of committees

Committees may be set up by the house to carry out affairs or investigate matters, or to study matters and report to the house according to a set time frame. A minister may be held accountable to the committee, and it is within their duty to aid the committee in the course of an investigation or to find facts by ordering civil servants within their ministry for them to testify in the committee or to comply with information requests.

Considering prime ministerial candidates

In order for a candidate to stand, they must receive at least one tenth of the house's vote and must be named in the party list.


The House of Representatives was established after the Revolution of 1932, when the Khana Ratsadon (the "People's Party"), overthrew the absolute monarchy and replaced it with a system of constitutional monarchy. When King Prajadhipok signed the temporary constitution of 1932, he established the first legislative assembly in Thailand, It was an entirely royally-appointed chamber. The first session of the People's Assembly was held on June 28, 1932, in the Ananta Samakhom Throne Hall. From then on, the House existed in various forms until it was abolished in 2014:

See more at: Constitutions of Thailand

  • 1946 – The 1946 constitution established a fully elected House of Representatives.
  • 1949 – On June 5, 1949, Orapin Chaiyakan became the first woman to be elected to hold a post in the National Assembly of Thailand (specifically, the House of Representatives).
  • 1952 – Establishment of the unicameral National Assembly with 123 members.
  • 1959 – The House was banned by Sarit Dhanarajata.
  • 1968 – The House was re-established with 219 members.
  • 1972 – The House was banned by Thanom Kittikachorn.
  • 1974 – Establishment of the House of Representatives.
  • 1976 – Establishment of a unicameral National Assembly with 360 royally-appointed members.
  • 1978 – Return of an elected House with 301 members.
  • 1991 – Establishment of a unicameral National Assembly with 292 appointed members.
  • 1997 – Establishment of a 500-member House of Representatives, 400 directly elected with 100 elected through proportional representation.
  • 2006 – Following the coup, an interim charter was signed establishing a 250-member National Legislative Assembly.
  • 2007 – Return to 500-member House with 375 members elected through single constituency elections and 125 appointed through party-list proportional representation, established, by referendum under the 2007 Constitution of Thailand.
  • 2014 – Abolished as a result of the 2014 Thai coup d'état.
  • 2017 – Re-established following the promulgation of the 2017 constitution.


The qualifications to be a candidate for the House of Representatives were outlined in Section 101, Part 2, Chapter 6 of the 2007 Constitution. The candidate had to be a citizen of Thailand by birth only, age of twenty-five or older on election day, and born in the province in which they intended to stand as a candidate. The candidate must have been a voter and therefore had to be on the electoral register for at least five years directly before the election, and must also had a house or have been in public service in the province for five years. The candidate must also had been a member of an educational institution in that province for at least five consecutive years. Politically, a candidate had to be a member of one political party for a period of at least ninety days before election day, except in cases of dissolution where thirty days was the minimum period. This was done to discourage party switching before the election. For party list candidates, they must also had to meet the same qualifications except for the provincial restrictions. They were instead divided in lists based on provincial groups.

Those specifically barred from being candidates were those: addicted to drugs, declared bankrupt, unable to vote (see voter eligibility below), former convicted felons (the individual had to wait for five years after release to become eligible), removed from public service for being corrupt or incompetent, had assets confiscated due to embezzlement and finally, the individual had not been a member of the government or civil service, Senate, local administrations, member of the judiciary or other independent agencies.


Before its abolition, the House of Representatives had 500 members. 375 members were directly elected in single constituency elections by first-past-the-post voting. The 375 constituencies were divided by population according to the census and tambons. The other 125 members were voted based on the Mixed Member Majoritarian system (MMM). In Thai general elections, voters had two votes: one to select the member of parliament for their constituencies and the second to choose which party they prefer. Seats were assigned to parties as a result through the d'Hondt method.

In accordance with the 2007 Constitution of Thailand, a general election is held every 4 years. The King with the advice of the prime minister is able todissolve the house of representatives at any time through a royal decree. Elections were held under universal suffrage; every voter had to be a citizen of Thailand, if not by birth then by being a citizen for 5 years. The voter had to be over 18 years old before the year the election was held. Voting in elections were also mandatory as missing an election would result in the loss of the right to be involved in political activities. Those barred from voting in House elections were members of the clergy, those suspended from the privilege for various reasons, detainees under legal or court orders and being of unsound mind or of mental infirmity.

Term and dissolution

The term of the House of Representatives was exactly four years from the previous election day. Upon the expiration of the House, the King would issue a decree calling for a general election of the House, in which the date of the election had to be announced. This had to be done within forty days of the expiration. The date of the election had to be the same for the entire Kingdom.

The King held the royal prerogative to dissolve the House before its expiration. When this happened a royal decree was issued where the election date was announced; this had to be done in no less than forty days and not more than sixty days from the date of the dissolution. The reasons and circumstances of a dissolution could be made only once.


Members of the House of Representatives were generally called Members of Parliament or MPs (Thai: สมาชิกสภาผู้แทนราษฎร or ส.ส.). The membership of the House of Representatives commenced on election day. If there was a vacancy in the membership of the House, and it was not due to expiration or dissolution, it had to be re-occupied. Vacancies could occur due to death, resignation, conviction and/or expulsion (only by a parliamentary party through a 3/4 majority vote). If the vacancy was of a constituency member then an election had to be held within forty days of the vacancy, unless it was less than 180 days of the present term of the House, then the vacancy could remain.

In the case where the vacancy was made by a proportional representative member, the vacancy would be filled by the Speaker of the House of Representatives by submitting the name of the next candidate in the party list (submitted on election day) to be published in the Royal Gazette. This had to be done within seven days. If no name was found then the vacancy could remain unfilled. Members of the House who had filled a vacancy under either of these procedures could only remain in the House for the remainder of its present term.


Presiding officers

The executive committee of House of Representatives consisted of one speaker and two deputy speakers to be its presiding officers. The Speaker of the House was also the ex officio President of the National Assembly of Thailand. The election was done by a secret ballot in the first session; after a resolution was passed; the elected would be formally approved by the King. The Speaker and Deputy Speakers of the House could not be members of the cabinet or any political party executive committee. The speaker and his deputies were not entitled to represent partisan interests and had to exercise their powers on a non-partisan basis.

Leader of the Governing Coalition

The Constitution stipulated that the Prime Minister and the Ministers had to be former members of the House of Representatives. After the first session, the House had to vote in a resolution to elect a Prime Minister, after which the King would formally approve him within thirty days. The Prime Minister-elect was always the leader of the largest party in the House. However, under the electoral system, the House resulted in a hung parliament. After the 2007 election, six parties formed a governing coalition, electing Samak Sundaravej of the largest party, People's Power Party (PPP), the Prime Minister.

On August 5, 2011, the House elected Yingluck Shinawatra as Prime Minister against Abhisit Vejjajiva of the Democrat Party, to a vote of 265 for and 159 against.

Leader of the Opposition

After the appointment of the Cabinet, the King appointed the official Leader of the Opposition of Thailand. The Leader of the Opposition had to be the leader of the largest party with no members holding any ministerial positions. His party had to be larger than one fifth of the total number of the House. If no Party met this qualification then the Leader with most votes from parties with no ministerial positions would then be appointed. The Royal appointment had to be countersigned by the President of the National Assembly. The Leader of the Opposition led the Shadow Cabinet of Thailand.

See also

This page was last updated at 2023-09-23 03:10 UTC. Update now. View original page.

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