2023 Thai general election

Following a political crisis in Thailand, the military staged a coup d'état in 2014, ousting the civilian caretaker government. The military junta, known as the National Council for Peace and Order (NCPO), rose to power under the leadership of Prayut Chan-o-cha as Prime Minister. In 2016, the NCPO completed the drafting of a new constitution and held a referendum to approve it. They banned criticism of the draft constitution and prohibited monitoring of the referendum. Activists against the document were arrested, detained, and prosecuted in military courts,[7] whilst voters who expressed their intention to vote against the draft were also arrested and prosecuted by the military regime.[8]

In 2019, after numerous delays, the junta finally held a general election on March 24. The elections were seen as a skewed race in which Prayut had an unfair advantage, with the senate wholly appointed by the junta and the constituencies redrawn last-minute.[9][10] After the election, the pro-junta Palang Pracharath party formed a coalition government, with Prayut selected by the parliament for another term as Prime Minister.

Prayut began his second term as Prime Minister on 9 June 2019.[11] According to the current constitution, a Prime Minister can only serve for a maximum of 8 years. However, the end of Prayut's term as the prime minister of Thailand is disputed, since there are many interpretations about the beginning of his term.[12][13][14] On 30 September 2022, the Constitutional Court finally ruled that Prayut's term began in 2017 along with the new constitution, meaning that he may serve as the prime minister until 2025, if he is selected by the parliament again.

At the end of 2022 saw the split in the ruling Palang Pracharath Party between Prayut and his close associate Prawit Wongsuwan, after the latter showed accommodation towards the main opposition Pheu Thai Party. Prayut was expected to join the new United Thai Nation Party along with his loyalists in the Palang Pracharath Party.[15] Forty politicians, including 34 incumbent MPs from both coalition and opposition camps, also resigned from their parties to join Bhumjaithai Party to increase their winning chances in this election.[16] On 23 December 2022, Prayut announced his intention to apply for membership of the United Thai Nation Party, as well as becoming the party's sole prime ministerial candidate.[17]

Rumor of possible coup was circulated long before the election. In September 2022, a cabinet minister, Chaiwut Thanakamanusorn, warned that protesting may result in cancellation of the election.[18]

Unlike the preceding 2019 election, which used a form of mixed-member proportional representation with 350 constituency seats and the remaining 150 being levelling seats, the electoral system was changed in a 2021 amendment of the constitution which restored the pre-2017 parallel voting system and removed the proportional representation mechanism.

Of the 500 members of the House of Representatives to be elected, 400 seats are elected from single-member constituencies by first-past-the-post voting (an increase of 50), and 100 party-list seats—filled separately and no longer serving as levelling seats—are voted on in a separate ballot (unlike in the 2019 election, where only one vote was cast by each voter to determine both constituency and levelling seats).[19] The change was criticised by smaller parties as the system benefits larger parties—especially the ruling Palang Pracharath Party and the main opposition party Pheu Thai, who both supported the amendment—at the expense of smaller ones, including the progressive Move Forward Party, whose predecessor Future Forward performed successfully in 2019 thanks to the proportional representation system.[20]

2022 reapportionment and redistricting

Due to the increase of the number of members of the House of Representatives elected from single-member constituencies from 350 to 400, a reapportionment of seats and redrawing of electoral boundaries was required. On 1 February 2022, the Election Commission announced its calculations that, from the total registered population of 66,171,439 as of 31 December 2021, there must be 1 member per 165,429 people. This distribution is subject to the approval of the organic law bills currently being considered by the National Assembly.[23]

The provisional number of members of the House of Representatives to be elected from single-member constituences in each province are as follows:

Province	MPs per province
Bangkok	33
Nakhon Ratchasima	16
Khon Kaen, Ubon Ratchathani	11
Chiang Mai, Chon Buri, Buriram, Nakhon Si Thammarat, Udon Thani	10
Sisaket, Songkhla	9
Nonthaburi, Roi Et, Samut Prakan, Surin	8
Chaiyaphum, Chiang Rai, Pathum Thani, Sakon Nakhon, Surat Thani	7
Kalasin, Nakhon Pathom, Nakhon Sawan, Phetchabun, Maha Sarakham	6
Kanchanaburi, Lop Buri, Narathiwat, Pattani, Phra Nakhon Si Ayutthaya, Phitsanulok, Rayong, Ratchaburi, Suphan Buri	5
Kamphaeng Phet, Chachoengsao, Trang, Nakhon Phanom, Lampang, Loei, Sara Buri, Sukhothai	4
Krabi, Chanthaburi, Chumphon, Nan, Bueng Kan, Prachuap Khiri Khan, Prachin Buri, Phayao, Phatthalung, Phichit, Phetchaburi, Phrae, Phuket, Yasothon, Yala, Sa Kaeo, Tak, Nong Khai, Nong Bua Lamphu, Samut Sakhon, Uttaradit	3
Chai Nat, Nakhon Nayok, Phang Nga, Mukdahan, Mae Hong Son, Lamphun, Satun, Ang Thong, Amnat Charoen, Uthai Thani	2
Trat, Ranong, Samut Songkhram, Sing Buri	1
Total	400

Some voting districts drawn by the Election Commission, such as Bangkok's 28th district shown above, were atypically composed of various parts of different khet; the commission was accused of gerrymandering.

The Election Commission had just finished drawing electoral boundaries in February 2023—just three months before the election, while many candidates had already begun campaigning. The original drawing was challenged in the Constitutional Court as the Commission included non-citizens in the calculation. The Court struck down the drawing, prompting the Commission to revise and present another boundary drawing.

Since late 2022, ex-politician Chuwit Kamolvisit began attacking Prayut whose relative was allegedly linked to Chinese “shady businesspeople” involving drug, gambling and money laundering. He later turned to Bhumjaithai Party, accusing it of corruption and promoting unrestricted use of marijuana.

In January 2023, two youth political activists began a hunger strike calling for the release of political prisoners detained before trial. Many of them were charged with lèse-majesté, which led to another debate on amending or cancellation of the law. Political parties were asked for their stance on the issue.

Beginning in January 2023, many civil society organizations called for volunteers to keep their eyes on the election process, citing the untrustworthiness of the Election Commission and its decision not to report the election result in real-time. As of March 2023, the movement had grown to 50 organizations, including media, who declared they would report the unofficial election result when the Commission would not.

On 20 March 2023, the House of Representatives was dissolved—three days before the term ended. Due to a legal technicality, the election date was postponed for another week from 7 May 2023. The move also allowed politicians more time to switch parties, which many analysts interpreted as the real motive behind it.

In March 2023, a group of hackers posted personal data of 55 million Thais for sale online. The group, called 9Near with a symbol resembling that of Move Forward Party, also mentioned in their page: "almost election, choose wisely."[24]