[1] Under the premiership of Banharn Silpa-Archa, there were public demands to have the politics reformed and the constitution amended.
At that time, the CDA established consisted of 99 members being 76 deputies elected by citizens of 76 Chanagwats, and 23 academicians from higher education institutes.
The CDA has been established once again after the Constitution of the Kingdom of Thailand, BE 2540 (1997) has been abrogated by the Council for Democratic Reform (CDR), a military junta which seized power in 2006.
Such 100 members were selected on 27 December 2006 by the CDR from the nominations submitted by the National People's Assembly, and appointed by Bhumibol Adulyadej on 2007, 1 January.
The King's royal command appointing CDA members was countersigned by the CDR Leader Sonthi Boonyaratglin.