Thailand's Constitutional Court has dismissed a petition challenging the legality of ballot papers used in the general election held on February 8, 2026, upholding the decisive victory of Prime Minister Anutin Charnvirakul and his Bhumjaithai Party. The court ruled that the inclusion of QR codes and barcodes on the ballots did not violate the constitutional requirement for a secret ballot, thus maintaining the legitimacy of the election results.

Nearly 38 million voters participated in the election, which resulted in the Bhumjaithai Party securing a strong mandate by winning over 290 seats in the 500-seat parliament, enabling it to form a coalition government. The petition, filed by the ombudsman, argued that the QR codes and barcodes printed on the ballots could potentially enable identification of voters’ choices, thereby threatening the secrecy of the vote. This concern arose in a country with a history of political instability, including frequent protests, military coups, and judicial interventions that have periodically overturned election outcomes or dissolved political parties.

The Constitutional Court acknowledged that the barcodes and QR codes could theoretically be used to trace individual votes. However, judges emphasized that the codes were intended solely to enhance electoral integrity and assist election officials in managing the voting process. They noted that accessing any information that could link a voter to their ballot would require obtaining separate ballot stubs, which are stored securely and separately from voter lists. The court found that the safeguards around ballot handling were adequate to protect voters’ privacy.

Although the court cleared the use of these codes in the 2026 election, it recommended refraining from their use in future polls to avoid potential risks to voter anonymity. The ruling averts the possibility of a new election, which would have been triggered had the court found the ballots unconstitutional.

Prime Minister Anutin’s administration welcomed the decision amid wider challenges, including public scrutiny over the country’s economic performance and allegations related to corruption and interference in the Senate selection process—claims the government denies.

This verdict follows a pattern in Thai politics where the Constitutional Court has played a significant role in electoral outcomes. In previous instances, the court has annulled elections, such as in 2006 when it cited issues with polling booth arrangements and election timing, further highlighting its influence over Thailand’s political landscape.