Cabinet of Sisowath Monireth

Although none of the ministers had any party affiliation, it was under this cabinet that political parties began to emerge in Cambodia following French approval in early 1946. Three political parties established and participated in the subsequent election: Democratic, Liberal and Progressive.^[1] In February 1946, ministers Khim Tit and Nhiek Tioulong failed to establish a "Socialist Party".^[3]

The party established by Prince Norodom Norindeth was the first political party in Cambodian history.^[2] Supported by French administrator and former leader of the local Socialist Party branch Louis Manipoud, the party advocated a "superficial, unrealistic and overly pro-French" program, including liberalism, constitutional monarchy, universal suffrage and the retention of French judges and administrators.^[3] The party selected Meas Hell as president and Khouth Koeun as vice-president, both would be ministers later. Other notables of the party included Neal Phleng, Samson Fernandez and Vann Molyvann.^[4]

The party was founded by supporters of Sơn Ngọc Thành: Sim Var, Ieu Koeus and Chhean Vam. They picked Sisowath Youtevong, a prince returning from France who had been in the Socialist Party, as party leader.^[2][3]The party then proceeded to recruit various personalities, including Huy Kanthoul, Penn Nouth, Sonn Voeunsai, Son Sann, Yem Sambaur, Sam Nhean and princes Sisowath Sirik Matak and Sisowath Essaro.^[3]

The party advocated a British-model constitutional monarchy and a unicameral parliament. It supported nationalisation of water, electricity production and transportation. It agreed Cambodian participation in French Union and called for the return of Thai-occupied territories, which was done in November 1946.^[3] The party obtained mass support and had always won the most seats in the National Assembly until the fraudulent election of 1955.

The party was founded by Prince Norodom Montana, former Economy and Agriculture minister, under the name Khmer National Progressive Party (Khmer: ក្រុមចំរើនជាតិខ្មែរ)^[3][5] or Progressive Democratic Party (Khmer: គណបក្សប្រជាធិបតេយ្យជឿន, French: Parti démocrate-progressiste).^[1][5]. The party never obtained any seats in parliamentary elections. Two of its members, Au Chheun and Chea Chin Koc, would hold ministrial positions.

• Puy, Kea (2010). រដ្ឋាភិបាលកម្ពុជាពីឆ្នាំ ១៩៤៥ ដល់ ឆ្នាំ ២០១០ [The Cambodian Government From 1945 To 2010] (in Khmer) (2nd ed.). សេវាបោះពុម្ពផ្សាយ រាហុ៍. ISBN 978-99950-64-15-0.
• Corfield, Justin (2009). The History of Cambodia. Greenwood Press. ISBN 978-0-313-35722-0.
• Corfield, Justin; Summers, Laura (2003). Historical dictionary of Cambodia. Scarecrow Press. ISBN 0-8108-4524-5.
• Lamant, Pierre L. (1987). "LES PARTIS POLITIQUES ET LES MOUVEMENTS DE RÉSISTANCE KHMERS VUS PAR LES SERVICES DE RENSEIGNEMENT FRANÇAIS (1945-1952)". Guerres mondiales et conflits contemporains (in French). 1987 (148). Presses Universitaires de France. JSTOR 25730442.