The transition of Thailand to a constitutional monarchy marked a significant turning point in the nation's political landscape. This change was primarily instigated by the People's Party, a group of military officers and civilians unhappy with the absolute monarchy under King Prajadhipok (Rama VII). The revolt was largely peaceful, occurring on June 24, 1932, when the People's Party successfully seized control without a major confrontation, compelling the king to accept their demands for a new constitution. The 1932 Constitution established the basis of parliamentary democracy in Thailand, thus diminishing the traditional, autocratic powers of the monarchy.

Following the revolution, the People's Party introduced significant political reforms, leading to the establishment of the National Assembly, civil liberties, and a more active political engagement of citizens. These changes set the stage for Thailand’s political evolution throughout the 20th century. King Prajadhipok, initially resistant to the reforms, eventually acquiesced but felt increasingly constrained by the new political order. His eventual abdication in 1935 further entrenched the constitutional monarchy's principles.

Despite the initial successes of the People's Party, the transition was fraught with challenges. The political environment in Thailand remained unstable, with subsequent coups and changes in government. Nevertheless, the 1932 revolution is often viewed as a foundational moment in Thai political history, laying important groundwork for democratic processes and civic rights. The monarch's role shifted gradually into a constitutional framework, reflecting a significant cultural and political transformation in Thai society.