Thai Rak Thai Party
After the election in 2001, Thaksin Shinawatra of the Thai Rak Thai Party became prime minister. The New Aspiration Party joined his government. In the following year, the party's majority—including leader Chavalit Yongchaiyudh—merged into the Thai Rak Thai Party. Some members disagreed with this decision: Thita Rangsitpol Manitkul joined the Democrat Party instead, Chalerm Yubamrung revived his Mass Party, and Chingchai Mongkoltham decided to continue the New Aspiration Party.