Thai General Elections
AS OF 2026-09-08 · 28 CONTESTS · general election, 8 February 2026 · WIKIPEDIA, NATIONAL ELECTORAL AUTHORITIES
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Every House of Representatives election in Siam and Thailand from 1933 to 2026, newest first. The earliest elections split seats between voters and government appointees; six military coups since 1947 have each interrupted the count, and the courts annulled the results outright in 2006 and 2014. A junta-appointed Senate helped choose the prime minister in 2019 and 2023 regardless of who won the House, a rule that expired only for the 2026 election.
Source: Wikipedia election articles · as of 2026-09-08
House seats
500
400 by constituency, 100 by party list
Elections since 1933
28
2026 turnout
71.42%
the first result to settle government on its own
Latest
2026
Bhumjaithai Party largest · Anutin Charnvirakul
The chronology
Every Siamese and Thai House of Representatives election since 1933, newest first, era by era. Six coups and two court-annulled results interrupt the count; the 1933-1957 rows carry a caveat where half or more of the House was appointed rather than elected.
The junta's constitution · 2019-
The 2017 constitution, drafted under the military government that took power in 2014, let an entirely junta-appointed Senate join the House in choosing the prime minister, and did so in both 2019 and 2023 regardless of which party had actually won the most seats or votes. That provision expired before the 2026 election, the first since 2011 whose result determined the government on its own.
Two constitutions, two coups · 2007-2014
A junta-drafted constitution produced the 2007 election, won by a party aligned with the ousted Thaksin, and his sister Yingluck Shinawatra won again in 2011. Her snap election for February 2014 was blocked by opposition protesters occupying polling stations in parts of the country, voided by the Constitutional Court for not being held on a single nationwide day, and never rerun: a May 2014 coup ended the attempt.
Thaksin, and a coup · 2001-2006
The 1997 constitution gave Thailand its first 500-seat House with party-list seats alongside constituency ones. Thaksin Shinawatra's Thai Rak Thai won comfortably in 2001 and by landslide in 2005, then won a boycotted, nearly single-party rerun in 2006 that the Constitutional Court annulled months later, shortly before a September coup removed him from power outright.
Black May, and its rerun · 1991-2000
The March 1992 election handed power to Suchinda Kraprayoon, the coup leader turned unelected prime minister, and his appointment triggered the Black May protests that forced his resignation within weeks. A caretaker government called a fresh election that September, and two more followed in 1995 and 1996 as coalitions rose and fell within a few years of each other.
The Prem years · 1979-1988
Prem Tinsulanonda governed as an unelected prime minister through elections in 1979, 1983 and 1986 before Chatichai Choonhavan became the first elected prime minister in over a decade in 1988. A coup by the National Peace Keeping Council removed him in February 1991.
A crowded field, twice · 1975-1976
Elections in January 1975 and again in April 1976, after the House was dissolved early, both returned fractured parliaments of a dozen or more parties and short-lived coalitions. A coup in October 1976 shut elections down again, this time for three years.
The generals' interlude · 1969
Sarit and then Thanom Kittikachorn governed without a parliament for twelve years. When an election finally returned in 1969, it was the first in which every seat was elected rather than appointed, though 72 of 219 went to independents; the House was dissolved again within two years and Thailand went another six years without a vote.
Coup, and half-appointed houses · 1948-1957
A 1947 coup abolished the parliament elected the year before and installed a new bicameral system, still with a large appointed bloc alongside the elected seats. Turnout in the February 1957 election jumped to 57%, which the source itself calls an indicator of heavy fraud, and Sarit Thanarat's own coup that September forced a rerun that December, the last vote before twelve years without an election.
The 1932 experiment · 1933-1946
Siam's 1932 revolution replaced absolute monarchy with a constitution, and the first House of Representatives split its seats exactly down the middle: half chosen by voters, half appointed by the government, meant as a bridge to full representative rule. It held for four elections, 1933 to 1946, while the country renamed itself Thailand along the way.
The long arc in charts
Hover any point for the exact figure.
Turnout
From lows near 30% in the appointed-seat era of the 1940s to a record 75.64% in 2023, turnout has climbed almost every decade Thailand has voted.
The largest party's vote share
Thai Rak Thai's 60% in 2005 sits well above every other contested field on record; Democrat's 17% in the crowded 1975 vote, the lowest, still needed a dozen coalition partners to govern. Several early and post-coup years printed no vote-share column at all, so those rows are missing from the line, not zero.
Records & superlatives
Highest turnout
75.6%
2023, of the elections with a recorded figure
Lowest turnout
29.5%
1948
Highest vote share
60.5%
Thai Rak Thai Party, 2005
Most seats won
461
Thai Rak Thai, 2006
Highest turnout
75.64%
The record for any Thai election, in the vote Move Forward topped before being blocked from government.
Lowest turnout
29.50%
Half the House was still government appointees rather than elected members at this point.
Largest mandate
377 of 500
Thai Rak Thai's landslide re-election, three fifths of the vote, the year before the party was ousted by a boycotted rerun and a coup.
Won seats, lost the vote
79 seats on fewer votes
The Justice Unity Party became the largest party in the House despite receiving fewer votes than the New Aspiration Party.
How Thai elections work
Appointed seats, 1933 to 1957
The first four elections split the House exactly in half between elected members and government appointees. The post-1947 constitutions kept a shrinking appointed bloc through the 1957 elections, after which every seat has been elected.
Two ballots, one house
Since the 1997 constitution the House has mixed single-member constituency seats with a nationwide party-list tier, voted on two separate ballots in most years. 2019 was the exception: a single ballot decided both tiers at once, a system dropped again by 2023.
A junta-appointed Senate chose the prime minister
Under the 2017 constitution's transitional rules, the prime minister was chosen by the full National Assembly, House and Senate together, and every one of the Senate's 250 members had been appointed by the military government. That provision expired before the 2026 election.
Six coups in a century
The military has removed an elected or newly elected government in 1947, 1957, 1976, 1991, 2006 and 2014, and rewrote the constitution before most of the elections that followed.