After The Black May uprising in 1992, a violent military crackdown on pro-democracy protesters, which exposed the flaws within the current systems such as the instability of the parliament, vote-buying, and high military intervention. In order to draft a new constitution, a group called Democratic Development Committee (DCC) composed of scholars, lawyers, and representatives was formed. With strong input from the public, this constitution is also called the People's constitution.
Prime minister must be an elected MP, closing a loophole that had allowed an unelected outsider to become PM.
Change from multi-seat constituency system to a single seat constituency system along with the party-list system, this aimed to create a stronger more majority government, reducing the power of small parties to collapse coalitions.
The Senate was to be directly elected by the people. Crucially, senators were supposed to be non-partisan and forbidden from being members of a political party, intended to act as a neutral "check and balance."
This constitution also established several independent bodies that overlooked such as Election Commission(ECT), National Counter Corruption Commission (NCCC) and the Constitutional Court.
This constitution strengthens large parties, promoting stable governments as seen in the first government led by Thaksin Shinawatra from Thai rak Thai party, who served a full term (2001-2005) under this constitution.
The decline of vote buying, thanks to the ECT who successfully curbed the most blatant form of electoral fraud.